sys/dev/netif/bwi/if_bwi.c

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Sepherosa Ziehau <sepherosa@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/bitops.h>
  37 #include <sys/endian.h>
  38 #include <sys/kernel.h>
  39 #include <sys/bus.h>
  40 #include <sys/interrupt.h>
  41 #include <sys/malloc.h>
  42 #include <sys/proc.h>
  43 #include <sys/rman.h>
  44 #include <sys/serialize.h>
  45 #include <sys/socket.h>
  46 #include <sys/sockio.h>
  47 #include <sys/sysctl.h>
  48
  49 #include <net/ethernet.h>
  50 #include <net/if.h>
  51 #include <net/bpf.h>
  52 #include <net/if_arp.h>
  53 #include <net/if_dl.h>
  54 #include <net/if_media.h>
  55 #include <net/ifq_var.h>
  56
  57 #include <netproto/802_11/ieee80211_radiotap.h>
  58 #include <netproto/802_11/ieee80211_var.h>
  59 #include <netproto/802_11/wlan_ratectl/onoe/ieee80211_onoe_param.h>
  60
  61 #include <bus/pci/pcireg.h>
  62 #include <bus/pci/pcivar.h>
  63 #include <bus/pci/pcidevs.h>
  64
  65 #include <dev/netif/bwi/if_bwireg.h>
  66 #include <dev/netif/bwi/if_bwivar.h>
  67 #include <dev/netif/bwi/bwimac.h>
  68 #include <dev/netif/bwi/bwirf.h>
  69
  70 struct bwi_clock_freq {
  71         u_int           clkfreq_min;
  72         u_int           clkfreq_max;
  73 };
  74
  75 struct bwi_myaddr_bssid {
  76         uint8_t         myaddr[IEEE80211_ADDR_LEN];
  77         uint8_t         bssid[IEEE80211_ADDR_LEN];
  78 } __packed;
  79
  80 static int      bwi_probe(device_t);
  81 static int      bwi_attach(device_t);
  82 static int      bwi_detach(device_t);
  83 static int      bwi_shutdown(device_t);
  84
  85 static void     bwi_init(void *);
  86 static int      bwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
  87 static void     bwi_start(struct ifnet *, struct ifaltq_subque *);
  88 static void     bwi_watchdog(struct ifnet *);
  89 static int      bwi_newstate(struct ieee80211com *, enum ieee80211_state, int);
  90 static void     bwi_updateslot(struct ifnet *);
  91 static int      bwi_media_change(struct ifnet *);
  92 static void     *bwi_ratectl_attach(struct ieee80211com *, u_int);
  93
  94 static void     bwi_next_scan(void *);
  95 static void     bwi_calibrate(void *);
  96
  97 static void     bwi_newstate_begin(struct bwi_softc *, enum ieee80211_state);
  98 static void     bwi_init_statechg(struct bwi_softc *, int);
  99 static int      bwi_stop(struct bwi_softc *, int);
 100 static int      bwi_newbuf(struct bwi_softc *, int, int);
 101 static int      bwi_encap(struct bwi_softc *, int, struct mbuf *,
 102                           struct ieee80211_node **, int);
 103
 104 static void     bwi_init_rxdesc_ring32(struct bwi_softc *, uint32_t,
 105                                        bus_addr_t, int, int);
 106 static void     bwi_reset_rx_ring32(struct bwi_softc *, uint32_t);
 107
 108 static int      bwi_init_tx_ring32(struct bwi_softc *, int);
 109 static int      bwi_init_rx_ring32(struct bwi_softc *);
 110 static int      bwi_init_txstats32(struct bwi_softc *);
 111 static void     bwi_free_tx_ring32(struct bwi_softc *, int);
 112 static void     bwi_free_rx_ring32(struct bwi_softc *);
 113 static void     bwi_free_txstats32(struct bwi_softc *);
 114 static void     bwi_setup_rx_desc32(struct bwi_softc *, int, bus_addr_t, int);
 115 static void     bwi_setup_tx_desc32(struct bwi_softc *, struct bwi_ring_data *,
 116                                     int, bus_addr_t, int);
 117 static int      bwi_rxeof32(struct bwi_softc *);
 118 static void     bwi_start_tx32(struct bwi_softc *, uint32_t, int);
 119 static void     bwi_txeof_status32(struct bwi_softc *);
 120
 121 static int      bwi_init_tx_ring64(struct bwi_softc *, int);
 122 static int      bwi_init_rx_ring64(struct bwi_softc *);
 123 static int      bwi_init_txstats64(struct bwi_softc *);
 124 static void     bwi_free_tx_ring64(struct bwi_softc *, int);
 125 static void     bwi_free_rx_ring64(struct bwi_softc *);
 126 static void     bwi_free_txstats64(struct bwi_softc *);
 127 static void     bwi_setup_rx_desc64(struct bwi_softc *, int, bus_addr_t, int);
 128 static void     bwi_setup_tx_desc64(struct bwi_softc *, struct bwi_ring_data *,
 129                                     int, bus_addr_t, int);
 130 static int      bwi_rxeof64(struct bwi_softc *);
 131 static void     bwi_start_tx64(struct bwi_softc *, uint32_t, int);
 132 static void     bwi_txeof_status64(struct bwi_softc *);
 133
 134 static void     bwi_intr(void *);
 135 static int      bwi_rxeof(struct bwi_softc *, int);
 136 static void     _bwi_txeof(struct bwi_softc *, uint16_t, int, int);
 137 static void     bwi_txeof(struct bwi_softc *);
 138 static void     bwi_txeof_status(struct bwi_softc *, int);
 139 static void     bwi_enable_intrs(struct bwi_softc *, uint32_t);
 140 static void     bwi_disable_intrs(struct bwi_softc *, uint32_t);
 141 static int      bwi_calc_rssi(struct bwi_softc *, const struct bwi_rxbuf_hdr *);
 142 static void     bwi_rx_radiotap(struct bwi_softc *, struct mbuf *,
 143                                 struct bwi_rxbuf_hdr *, const void *, int, int);
 144
 145 static int      bwi_dma_alloc(struct bwi_softc *);
 146 static void     bwi_dma_free(struct bwi_softc *);
 147 static int      bwi_dma_ring_alloc(struct bwi_softc *, bus_dma_tag_t,
 148                                    struct bwi_ring_data *, bus_size_t,
 149                                    uint32_t);
 150 static int      bwi_dma_mbuf_create(struct bwi_softc *);
 151 static void     bwi_dma_mbuf_destroy(struct bwi_softc *, int, int);
 152 static int      bwi_dma_txstats_alloc(struct bwi_softc *, uint32_t, bus_size_t);
 153 static void     bwi_dma_txstats_free(struct bwi_softc *);
 154 static void     bwi_dma_ring_addr(void *, bus_dma_segment_t *, int, int);
 155 static void     bwi_dma_buf_addr(void *, bus_dma_segment_t *, int,
 156                                  bus_size_t, int);
 157
 158 static void     bwi_power_on(struct bwi_softc *, int);
 159 static int      bwi_power_off(struct bwi_softc *, int);
 160 static int      bwi_set_clock_mode(struct bwi_softc *, enum bwi_clock_mode);
 161 static int      bwi_set_clock_delay(struct bwi_softc *);
 162 static void     bwi_get_clock_freq(struct bwi_softc *, struct bwi_clock_freq *);
 163 static int      bwi_get_pwron_delay(struct bwi_softc *sc);
 164 static void     bwi_set_addr_filter(struct bwi_softc *, uint16_t,
 165                                     const uint8_t *);
 166 static void     bwi_set_bssid(struct bwi_softc *, const uint8_t *);
 167 static int      bwi_set_chan(struct bwi_softc *, struct ieee80211_channel *);
 168
 169 static void     bwi_get_card_flags(struct bwi_softc *);
 170 static void     bwi_get_eaddr(struct bwi_softc *, uint16_t, uint8_t *);
 171
 172 static int      bwi_bus_attach(struct bwi_softc *);
 173 static int      bwi_bbp_attach(struct bwi_softc *);
 174 static int      bwi_bbp_power_on(struct bwi_softc *, enum bwi_clock_mode);
 175 static void     bwi_bbp_power_off(struct bwi_softc *);
 176
 177 static const char *bwi_regwin_name(const struct bwi_regwin *);
 178 static uint32_t bwi_regwin_disable_bits(struct bwi_softc *);
 179 static void     bwi_regwin_info(struct bwi_softc *, uint16_t *, uint8_t *);
 180 static int      bwi_regwin_select(struct bwi_softc *, int);
 181
 182 static void     bwi_led_attach(struct bwi_softc *);
 183 static void     bwi_led_newstate(struct bwi_softc *, enum ieee80211_state);
 184 static void     bwi_led_event(struct bwi_softc *, int);
 185 static void     bwi_led_blink_start(struct bwi_softc *, int, int);
 186 static void     bwi_led_blink_next(void *);
 187 static void     bwi_led_blink_end(void *);
 188
 189 static const struct bwi_dev {
 190         uint16_t        vid;
 191         uint16_t        did;
 192         const char      *desc;
 193 } bwi_devices[] = {
 194         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4301,
 195           "Broadcom BCM4301 802.11 Wireless Lan" },
 196
 197         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307,
 198           "Broadcom BCM4307 802.11 Wireless Lan" },
 199
 200         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4311,
 201           "Broadcom BCM4311 802.11 Wireless Lan" },
 202
 203         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4312,
 204           "Broadcom BCM4312 802.11 Wireless Lan" },
 205
 206         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_1,
 207           "Broadcom BCM4306 802.11 Wireless Lan" },
 208
 209         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2,
 210           "Broadcom BCM4306 802.11 Wireless Lan" },
 211
 212         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_3,
 213           "Broadcom BCM4306 802.11 Wireless Lan" },
 214
 215         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309,
 216           "Broadcom BCM4309 802.11 Wireless Lan" },
 217
 218         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318,
 219           "Broadcom BCM4318 802.11 Wireless Lan" },
 220
 221         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319,
 222           "Broadcom BCM4319 802.11 Wireless Lan" }
 223 };
 224
 225 static device_method_t bwi_methods[] = {
 226         DEVMETHOD(device_probe,         bwi_probe),
 227         DEVMETHOD(device_attach,        bwi_attach),
 228         DEVMETHOD(device_detach,        bwi_detach),
 229         DEVMETHOD(device_shutdown,      bwi_shutdown),
 230 #if 0
 231         DEVMETHOD(device_suspend,       bwi_suspend),
 232         DEVMETHOD(device_resume,        bwi_resume),
 233 #endif
 234         { 0, 0 }
 235 };
 236
 237 static driver_t bwi_driver = {
 238         "bwi",
 239         bwi_methods,
 240         sizeof(struct bwi_softc)
 241 };
 242
 243 static devclass_t bwi_devclass;
 244
 245 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, NULL, NULL);
 246 DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, NULL, NULL);
 247
 248 MODULE_DEPEND(bwi, wlan, 1, 1, 1);
 249 MODULE_DEPEND(bwi, wlan_ratectl_onoe, 1, 1, 1);
 250 #if 0
 251 MODULE_DEPEND(bwi, wlan_ratectl_amrr, 1, 1, 1);
 252 #endif
 253 MODULE_DEPEND(bwi, pci, 1, 1, 1);
 254 MODULE_DEPEND(bwi, cardbus, 1, 1, 1);
 255
 256 static const struct {
 257         uint16_t        did_min;
 258         uint16_t        did_max;
 259         uint16_t        bbp_id;
 260 } bwi_bbpid_map[] = {
 261         { 0x4301, 0x4301, 0x4301 },
 262         { 0x4305, 0x4307, 0x4307 },
 263         { 0x4403, 0x4403, 0x4402 },
 264         { 0x4610, 0x4615, 0x4610 },
 265         { 0x4710, 0x4715, 0x4710 },
 266         { 0x4720, 0x4725, 0x4309 }
 267 };
 268
 269 static const struct {
 270         uint16_t        bbp_id;
 271         int             nregwin;
 272 } bwi_regwin_count[] = {
 273         { 0x4301, 5 },
 274         { 0x4306, 6 },
 275         { 0x4307, 5 },
 276         { 0x4310, 8 },
 277         { 0x4401, 3 },
 278         { 0x4402, 3 },
 279         { 0x4610, 9 },
 280         { 0x4704, 9 },
 281         { 0x4710, 9 },
 282         { 0x5365, 7 }
 283 };
 284
 285 #define CLKSRC(src)                             \
 286 [BWI_CLKSRC_ ## src] = {                        \
 287         .freq_min = BWI_CLKSRC_ ##src## _FMIN,  \
 288         .freq_max = BWI_CLKSRC_ ##src## _FMAX   \
 289 }
 290
 291 static const struct {
 292         u_int   freq_min;
 293         u_int   freq_max;
 294 } bwi_clkfreq[BWI_CLKSRC_MAX] = {
 295         CLKSRC(LP_OSC),
 296         CLKSRC(CS_OSC),
 297         CLKSRC(PCI)
 298 };
 299
 300 #undef CLKSRC
 301
 302 #define VENDOR_LED_ACT(vendor)                          \
 303 {                                                       \
 304         .vid = PCI_VENDOR_##vendor,                     \
 305         .led_act = { BWI_VENDOR_LED_ACT_##vendor }      \
 306 }
 307
 308 static const struct {
 309         uint16_t        vid;
 310         uint8_t         led_act[BWI_LED_MAX];
 311 } bwi_vendor_led_act[] = {
 312         VENDOR_LED_ACT(COMPAQ),
 313         VENDOR_LED_ACT(LINKSYS)
 314 };
 315
 316 static const uint8_t bwi_default_led_act[BWI_LED_MAX] =
 317         { BWI_VENDOR_LED_ACT_DEFAULT };
 318
 319 #undef VENDOR_LED_ACT
 320
 321 static const struct {
 322         int     on_dur;
 323         int     off_dur;
 324 } bwi_led_duration[109] = {
 325         [0]     = { 400, 100 },
 326         [2]     = { 150, 75 },
 327         [4]     = { 90, 45 },
 328         [11]    = { 66, 34 },
 329         [12]    = { 53, 26 },
 330         [18]    = { 42, 21 },
 331         [22]    = { 35, 17 },
 332         [24]    = { 32, 16 },
 333         [36]    = { 21, 10 },
 334         [48]    = { 16, 8 },
 335         [72]    = { 11, 5 },
 336         [96]    = { 9, 4 },
 337         [108]   = { 7, 3 }
 338 };
 339
 340 #ifdef BWI_DEBUG
 341 #ifdef BWI_DEBUG_VERBOSE
 342 static uint32_t bwi_debug = BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_TXPOWER;
 343 #else
 344 static uint32_t bwi_debug;
 345 #endif
 346 TUNABLE_INT("hw.bwi.debug", (int *)&bwi_debug);
 347 #endif  /* BWI_DEBUG */
 348
 349 static const uint8_t bwi_zero_addr[IEEE80211_ADDR_LEN];
 350
 351 static const struct ieee80211_rateset bwi_rateset_11b =
 352         { 4, { 2, 4, 11, 22 } };
 353 static const struct ieee80211_rateset bwi_rateset_11g =
 354         { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } };
 355
 356 uint16_t
 357 bwi_read_sprom(struct bwi_softc *sc, uint16_t ofs)
 358 {
 359         return CSR_READ_2(sc, ofs + BWI_SPROM_START);
 360 }
 361
 362 static __inline void
 363 bwi_setup_desc32(struct bwi_softc *sc, struct bwi_desc32 *desc_array,
 364                  int ndesc, int desc_idx, bus_addr_t paddr, int buf_len,
 365                  int tx)
 366 {
 367         struct bwi_desc32 *desc = &desc_array[desc_idx];
 368         uint32_t ctrl, addr, addr_hi, addr_lo;
 369
 370         addr_lo = __SHIFTOUT(paddr, BWI_DESC32_A_ADDR_MASK);
 371         addr_hi = __SHIFTOUT(paddr, BWI_DESC32_A_FUNC_MASK);
 372
 373         addr = __SHIFTIN(addr_lo, BWI_DESC32_A_ADDR_MASK) |
 374                __SHIFTIN(BWI_DESC32_A_FUNC_TXRX, BWI_DESC32_A_FUNC_MASK);
 375
 376         ctrl = __SHIFTIN(buf_len, BWI_DESC32_C_BUFLEN_MASK) |
 377                __SHIFTIN(addr_hi, BWI_DESC32_C_ADDRHI_MASK);
 378         if (desc_idx == ndesc - 1)
 379                 ctrl |= BWI_DESC32_C_EOR;
 380         if (tx) {
 381                 /* XXX */
 382                 ctrl |= BWI_DESC32_C_FRAME_START |
 383                         BWI_DESC32_C_FRAME_END |
 384                         BWI_DESC32_C_INTR;
 385         }
 386
 387         desc->addr = htole32(addr);
 388         desc->ctrl = htole32(ctrl);
 389 }
 390
 391 /* XXX does not belong here */
 392 uint8_t
 393 bwi_rate2plcp(uint8_t rate)
 394 {
 395         rate &= IEEE80211_RATE_VAL;
 396
 397         switch (rate) {
 398         case 2:         return 0xa;
 399         case 4:         return 0x14;
 400         case 11:        return 0x37;
 401         case 22:        return 0x6e;
 402         case 44:        return 0xdc;
 403
 404         case 12:        return 0xb;
 405         case 18:        return 0xf;
 406         case 24:        return 0xa;
 407         case 36:        return 0xe;
 408         case 48:        return 0x9;
 409         case 72:        return 0xd;
 410         case 96:        return 0x8;
 411         case 108:       return 0xc;
 412
 413         default:
 414                 panic("unsupported rate %u", rate);
 415         }
 416 }
 417
 418 /* XXX does not belong here */
 419 #define IEEE80211_OFDM_PLCP_RATE_MASK   __BITS(3, 0)
 420 #define IEEE80211_OFDM_PLCP_LEN_MASK    __BITS(16, 5)
 421
 422 static __inline void
 423 bwi_ofdm_plcp_header(uint32_t *plcp0, int pkt_len, uint8_t rate)
 424 {
 425         uint32_t plcp;
 426
 427         plcp = __SHIFTIN(bwi_rate2plcp(rate), IEEE80211_OFDM_PLCP_RATE_MASK) |
 428                __SHIFTIN(pkt_len, IEEE80211_OFDM_PLCP_LEN_MASK);
 429         *plcp0 = htole32(plcp);
 430 }
 431
 432 /* XXX does not belong here */
 433 struct ieee80211_ds_plcp_hdr {
 434         uint8_t         i_signal;
 435         uint8_t         i_service;
 436         uint16_t        i_length;
 437         uint16_t        i_crc;
 438 } __packed;
 439
 440 #define IEEE80211_DS_PLCP_SERVICE_LOCKED        0x04
 441 #define IEEE80211_DS_PLCL_SERVICE_PBCC          0x08
 442 #define IEEE80211_DS_PLCP_SERVICE_LENEXT5       0x20
 443 #define IEEE80211_DS_PLCP_SERVICE_LENEXT6       0x40
 444 #define IEEE80211_DS_PLCP_SERVICE_LENEXT7       0x80
 445
 446 static __inline void
 447 bwi_ds_plcp_header(struct ieee80211_ds_plcp_hdr *plcp, int pkt_len,
 448                    uint8_t rate)
 449 {
 450         int len, service, pkt_bitlen;
 451
 452         pkt_bitlen = pkt_len * NBBY;
 453         len = howmany(pkt_bitlen * 2, rate);
 454
 455         service = IEEE80211_DS_PLCP_SERVICE_LOCKED;
 456         if (rate == (11 * 2)) {
 457                 int pkt_bitlen1;
 458
 459                 /*
 460                  * PLCP service field needs to be adjusted,
 461                  * if TX rate is 11Mbytes/s
 462                  */
 463                 pkt_bitlen1 = len * 11;
 464                 if (pkt_bitlen1 - pkt_bitlen >= NBBY)
 465                         service |= IEEE80211_DS_PLCP_SERVICE_LENEXT7;
 466         }
 467
 468         plcp->i_signal = bwi_rate2plcp(rate);
 469         plcp->i_service = service;
 470         plcp->i_length = htole16(len);
 471         /* NOTE: do NOT touch i_crc */
 472 }
 473
 474 static __inline void
 475 bwi_plcp_header(void *plcp, int pkt_len, uint8_t rate)
 476 {
 477         enum ieee80211_modtype modtype;
 478
 479         /*
 480          * Assume caller has zeroed 'plcp'
 481          */
 482
 483         modtype = ieee80211_rate2modtype(rate);
 484         if (modtype == IEEE80211_MODTYPE_OFDM)
 485                 bwi_ofdm_plcp_header(plcp, pkt_len, rate);
 486         else if (modtype == IEEE80211_MODTYPE_DS)
 487                 bwi_ds_plcp_header(plcp, pkt_len, rate);
 488         else
 489                 panic("unsupport modulation type %u", modtype);
 490 }
 491
 492 static __inline uint8_t
 493 bwi_ofdm_plcp2rate(const uint32_t *plcp0)
 494 {
 495         uint32_t plcp;
 496         uint8_t plcp_rate;
 497
 498         plcp = le32toh(*plcp0);
 499         plcp_rate = __SHIFTOUT(plcp, IEEE80211_OFDM_PLCP_RATE_MASK);
 500         return ieee80211_plcp2rate(plcp_rate, 1);
 501 }
 502
 503 static __inline uint8_t
 504 bwi_ds_plcp2rate(const struct ieee80211_ds_plcp_hdr *hdr)
 505 {
 506         return ieee80211_plcp2rate(hdr->i_signal, 0);
 507 }
 508
 509 static int
 510 bwi_probe(device_t dev)
 511 {
 512         const struct bwi_dev *b;
 513         uint16_t did, vid;
 514
 515         did = pci_get_device(dev);
 516         vid = pci_get_vendor(dev);
 517
 518         for (b = bwi_devices; b->desc != NULL; ++b) {
 519                 if (b->did == did && b->vid == vid) {
 520                         device_set_desc(dev, b->desc);
 521                         return 0;
 522                 }
 523         }
 524         return ENXIO;
 525 }
 526
 527 static int
 528 bwi_attach(device_t dev)
 529 {
 530         struct bwi_softc *sc = device_get_softc(dev);
 531         struct ieee80211com *ic = &sc->sc_ic;
 532         struct ifnet *ifp = &ic->ic_if;
 533         struct bwi_mac *mac;
 534         struct bwi_phy *phy;
 535         char ethstr[ETHER_ADDRSTRLEN + 1];
 536         int i, error;
 537
 538         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 539         sc->sc_dev = dev;
 540
 541         /*
 542          * Initialize sysctl variables
 543          */
 544         sc->sc_fw_version = BWI_FW_VERSION3;
 545         sc->sc_dwell_time = 200;
 546         sc->sc_led_idle = (2350 * hz) / 1000;
 547         sc->sc_led_blink = 1;
 548         sc->sc_txpwr_calib = 1;
 549 #ifdef BWI_DEBUG
 550         sc->sc_debug = bwi_debug;
 551 #endif
 552
 553         callout_init(&sc->sc_scan_ch);
 554         callout_init(&sc->sc_calib_ch);
 555
 556 #ifndef BURN_BRIDGES
 557         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
 558                 uint32_t irq, mem;
 559
 560                 /* XXX Save more PCIR */
 561                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
 562                 mem = pci_read_config(dev, BWI_PCIR_BAR, 4);
 563
 564                 device_printf(dev, "chip is in D%d power mode "
 565                     "-- setting to D0\n", pci_get_powerstate(dev));
 566
 567                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
 568
 569                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
 570                 pci_write_config(dev, BWI_PCIR_BAR, mem, 4);
 571         }
 572 #endif  /* !BURN_BRIDGE */
 573
 574         pci_enable_busmaster(dev);
 575
 576         /* Get more PCI information */
 577         sc->sc_pci_revid = pci_get_revid(dev);
 578         sc->sc_pci_subvid = pci_get_subvendor(dev);
 579         sc->sc_pci_subdid = pci_get_subdevice(dev);
 580
 581         /*
 582          * Allocate IO memory
 583          */
 584         sc->sc_mem_rid = BWI_PCIR_BAR;
 585         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 586                                                 &sc->sc_mem_rid, RF_ACTIVE);
 587         if (sc->sc_mem_res == NULL) {
 588                 device_printf(dev, "can't allocate IO memory\n");
 589                 return ENXIO;
 590         }
 591         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 592         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 593
 594         /*
 595          * Allocate IRQ
 596          */
 597         sc->sc_irq_rid = 0;
 598         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 599                                                 &sc->sc_irq_rid,
 600                                                 RF_SHAREABLE | RF_ACTIVE);
 601         if (sc->sc_irq_res == NULL) {
 602                 device_printf(dev, "can't allocate irq\n");
 603                 error = ENXIO;
 604                 goto fail;
 605         }
 606
 607         /*
 608          * Create sysctl tree
 609          */
 610         sysctl_ctx_init(&sc->sc_sysctl_ctx);
 611         sc->sc_sysctl_tree = SYSCTL_ADD_NODE(&sc->sc_sysctl_ctx,
 612                                              SYSCTL_STATIC_CHILDREN(_hw),
 613                                              OID_AUTO,
 614                                              device_get_nameunit(dev),
 615                                              CTLFLAG_RD, 0, "");
 616         if (sc->sc_sysctl_tree == NULL) {
 617                 device_printf(dev, "can't add sysctl node\n");
 618                 error = ENXIO;
 619                 goto fail;
 620         }
 621
 622         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 623                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 624                         "dwell_time", CTLFLAG_RW, &sc->sc_dwell_time, 0,
 625                         "Channel dwell time during scan (msec)");
 626         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 627                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 628                         "fw_version", CTLFLAG_RD, &sc->sc_fw_version, 0,
 629                         "Firmware version");
 630         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 631                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 632                         "led_idle", CTLFLAG_RW, &sc->sc_led_idle, 0,
 633                         "# ticks before LED enters idle state");
 634         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 635                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 636                        "led_blink", CTLFLAG_RW, &sc->sc_led_blink, 0,
 637                        "Allow LED to blink");
 638         SYSCTL_ADD_INT(&sc->sc_sysctl_ctx,
 639                        SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 640                        "txpwr_calib", CTLFLAG_RW, &sc->sc_txpwr_calib, 0,
 641                        "Enable software TX power calibration");
 642 #ifdef BWI_DEBUG
 643         SYSCTL_ADD_UINT(&sc->sc_sysctl_ctx,
 644                         SYSCTL_CHILDREN(sc->sc_sysctl_tree), OID_AUTO,
 645                         "debug", CTLFLAG_RW, &sc->sc_debug, 0, "Debug flags");
 646 #endif
 647
 648         bwi_power_on(sc, 1);
 649
 650         error = bwi_bbp_attach(sc);
 651         if (error)
 652                 goto fail;
 653
 654         error = bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
 655         if (error)
 656                 goto fail;
 657
 658         if (BWI_REGWIN_EXIST(&sc->sc_com_regwin)) {
 659                 error = bwi_set_clock_delay(sc);
 660                 if (error)
 661                         goto fail;
 662
 663                 error = bwi_set_clock_mode(sc, BWI_CLOCK_MODE_FAST);
 664                 if (error)
 665                         goto fail;
 666
 667                 error = bwi_get_pwron_delay(sc);
 668                 if (error)
 669                         goto fail;
 670         }
 671
 672         error = bwi_bus_attach(sc);
 673         if (error)
 674                 goto fail;
 675
 676         bwi_get_card_flags(sc);
 677
 678         bwi_led_attach(sc);
 679
 680         for (i = 0; i < sc->sc_nmac; ++i) {
 681                 struct bwi_regwin *old;
 682
 683                 mac = &sc->sc_mac[i];
 684                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old);
 685                 if (error)
 686                         goto fail;
 687
 688                 error = bwi_mac_lateattach(mac);
 689                 if (error)
 690                         goto fail;
 691
 692                 error = bwi_regwin_switch(sc, old, NULL);
 693                 if (error)
 694                         goto fail;
 695         }
 696
 697         /*
 698          * XXX First MAC is known to exist
 699          * TODO2
 700          */
 701         mac = &sc->sc_mac[0];
 702         phy = &mac->mac_phy;
 703
 704         bwi_bbp_power_off(sc);
 705
 706         error = bwi_dma_alloc(sc);
 707         if (error)
 708                 goto fail;
 709
 710         ifp->if_softc = sc;
 711         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 712         ifp->if_init = bwi_init;
 713         ifp->if_ioctl = bwi_ioctl;
 714         ifp->if_start = bwi_start;
 715         ifp->if_watchdog = bwi_watchdog;
 716         ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN);
 717         ifq_set_ready(&ifp->if_snd);
 718
 719         /* Get locale */
 720         sc->sc_locale = __SHIFTOUT(bwi_read_sprom(sc, BWI_SPROM_CARD_INFO),
 721                                    BWI_SPROM_CARD_INFO_LOCALE);
 722         DPRINTF(sc, BWI_DBG_ATTACH, "locale: %d\n", sc->sc_locale);
 723
 724         /*
 725          * Setup ratesets, phytype, channels and get MAC address
 726          */
 727         if (phy->phy_mode == IEEE80211_MODE_11B ||
 728             phy->phy_mode == IEEE80211_MODE_11G) {
 729                 uint16_t chan_flags;
 730
 731                 ic->ic_sup_rates[IEEE80211_MODE_11B] = bwi_rateset_11b;
 732
 733                 if (phy->phy_mode == IEEE80211_MODE_11B) {
 734                         chan_flags = IEEE80211_CHAN_B;
 735                         ic->ic_phytype = IEEE80211_T_DS;
 736                 } else {
 737                         chan_flags = IEEE80211_CHAN_CCK |
 738                                      IEEE80211_CHAN_OFDM |
 739                                      IEEE80211_CHAN_DYN |
 740                                      IEEE80211_CHAN_2GHZ;
 741                         ic->ic_phytype = IEEE80211_T_OFDM;
 742                         ic->ic_sup_rates[IEEE80211_MODE_11G] =
 743                                 bwi_rateset_11g;
 744                 }
 745
 746                 /* XXX depend on locale */
 747                 for (i = 1; i <= 14; ++i) {
 748                         ic->ic_channels[i].ic_freq =
 749                                 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ);
 750                         ic->ic_channels[i].ic_flags = chan_flags;
 751                 }
 752
 753                 bwi_get_eaddr(sc, BWI_SPROM_11BG_EADDR, ic->ic_myaddr);
 754                 if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 755                         bwi_get_eaddr(sc, BWI_SPROM_11A_EADDR, ic->ic_myaddr);
 756                         if (IEEE80211_IS_MULTICAST(ic->ic_myaddr)) {
 757                                 device_printf(dev, "invalid MAC address: "
 758                                     "%s\n", kether_ntoa(ic->ic_myaddr, ethstr));
 759                         }
 760                 }
 761         } else if (phy->phy_mode == IEEE80211_MODE_11A) {
 762                 /* TODO:11A */
 763                 error = ENXIO;
 764                 goto fail;
 765         } else {
 766                 panic("unknown phymode %d", phy->phy_mode);
 767         }
 768
 769         ic->ic_caps = IEEE80211_C_SHSLOT |
 770                       IEEE80211_C_SHPREAMBLE |
 771                       IEEE80211_C_WPA |
 772                       IEEE80211_C_MONITOR;
 773         ic->ic_state = IEEE80211_S_INIT;
 774         ic->ic_opmode = IEEE80211_M_STA;
 775
 776         IEEE80211_ONOE_PARAM_SETUP(&sc->sc_onoe_param);
 777         ic->ic_ratectl.rc_st_ratectl_cap = IEEE80211_RATECTL_CAP_ONOE;
 778         ic->ic_ratectl.rc_st_ratectl = IEEE80211_RATECTL_ONOE;
 779         ic->ic_ratectl.rc_st_attach = bwi_ratectl_attach;
 780
 781         ic->ic_updateslot = bwi_updateslot;
 782
 783         ieee80211_ifattach(ic);
 784
 785         ic->ic_headroom = sizeof(struct bwi_txbuf_hdr);
 786         ic->ic_flags_ext |= IEEE80211_FEXT_SWBMISS;
 787
 788         sc->sc_newstate = ic->ic_newstate;
 789         ic->ic_newstate = bwi_newstate;
 790
 791         ieee80211_media_init(ic, bwi_media_change, ieee80211_media_status);
 792
 793         /*
 794          * Attach radio tap
 795          */
 796         bpfattach_dlt(ifp, DLT_IEEE802_11_RADIO,
 797                       sizeof(struct ieee80211_frame) + sizeof(sc->sc_tx_th),
 798                       &sc->sc_drvbpf);
 799
 800         sc->sc_tx_th_len = roundup(sizeof(sc->sc_tx_th), sizeof(uint32_t));
 801         sc->sc_tx_th.wt_ihdr.it_len = htole16(sc->sc_tx_th_len);
 802         sc->sc_tx_th.wt_ihdr.it_present = htole32(BWI_TX_RADIOTAP_PRESENT);
 803
 804         sc->sc_rx_th_len = roundup(sizeof(sc->sc_rx_th), sizeof(uint32_t));
 805         sc->sc_rx_th.wr_ihdr.it_len = htole16(sc->sc_rx_th_len);
 806         sc->sc_rx_th.wr_ihdr.it_present = htole32(BWI_RX_RADIOTAP_PRESENT);
 807
 808         error = bus_setup_intr(dev, sc->sc_irq_res, INTR_MPSAFE, bwi_intr, sc,
 809                                &sc->sc_irq_handle, ifp->if_serializer);
 810         if (error) {
 811                 device_printf(dev, "can't setup intr\n");
 812                 bpfdetach(ifp);
 813                 ieee80211_ifdetach(ic);
 814                 goto fail;
 815         }
 816
 817         ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->sc_irq_res));
 818
 819         if (bootverbose)
 820                 ieee80211_announce(ic);
 821
 822         return 0;
 823 fail:
 824         bwi_detach(dev);
 825         return error;
 826 }
 827
 828 static int
 829 bwi_detach(device_t dev)
 830 {
 831         struct bwi_softc *sc = device_get_softc(dev);
 832
 833         if (device_is_attached(dev)) {
 834                 struct ifnet *ifp = &sc->sc_ic.ic_if;
 835                 int i;
 836
 837                 lwkt_serialize_enter(ifp->if_serializer);
 838                 bwi_stop(sc, 1);
 839                 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 840                 lwkt_serialize_exit(ifp->if_serializer);
 841
 842                 bpfdetach(ifp);
 843                 ieee80211_ifdetach(&sc->sc_ic);
 844
 845                 for (i = 0; i < sc->sc_nmac; ++i)
 846                         bwi_mac_detach(&sc->sc_mac[i]);
 847         }
 848
 849         if (sc->sc_sysctl_tree != NULL)
 850                 sysctl_ctx_free(&sc->sc_sysctl_ctx);
 851
 852         if (sc->sc_irq_res != NULL) {
 853                 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
 854                                      sc->sc_irq_res);
 855         }
 856
 857         if (sc->sc_mem_res != NULL) {
 858                 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
 859                                      sc->sc_mem_res);
 860         }
 861
 862         bwi_dma_free(sc);
 863
 864         return 0;
 865 }
 866
 867 static int
 868 bwi_shutdown(device_t dev)
 869 {
 870         struct bwi_softc *sc = device_get_softc(dev);
 871         struct ifnet *ifp = &sc->sc_ic.ic_if;
 872
 873         lwkt_serialize_enter(ifp->if_serializer);
 874         bwi_stop(sc, 1);
 875         lwkt_serialize_exit(ifp->if_serializer);
 876         return 0;
 877 }
 878
 879 static void
 880 bwi_power_on(struct bwi_softc *sc, int with_pll)
 881 {
 882         uint32_t gpio_in, gpio_out, gpio_en;
 883         uint16_t status;
 884
 885         gpio_in = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4);
 886         if (gpio_in & BWI_PCIM_GPIO_PWR_ON)
 887                 goto back;
 888
 889         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 890         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 891
 892         gpio_out |= BWI_PCIM_GPIO_PWR_ON;
 893         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 894         if (with_pll) {
 895                 /* Turn off PLL first */
 896                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 897                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 898         }
 899
 900         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 901         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 902         DELAY(1000);
 903
 904         if (with_pll) {
 905                 /* Turn on PLL */
 906                 gpio_out &= ~BWI_PCIM_GPIO_PLL_PWR_OFF;
 907                 pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 908                 DELAY(5000);
 909         }
 910
 911 back:
 912         /* Clear "Signaled Target Abort" */
 913         status = pci_read_config(sc->sc_dev, PCIR_STATUS, 2);
 914         status &= ~PCIM_STATUS_STABORT;
 915         pci_write_config(sc->sc_dev, PCIR_STATUS, status, 2);
 916 }
 917
 918 static int
 919 bwi_power_off(struct bwi_softc *sc, int with_pll)
 920 {
 921         uint32_t gpio_out, gpio_en;
 922
 923         pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_IN, 4); /* dummy read */
 924         gpio_out = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
 925         gpio_en = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, 4);
 926
 927         gpio_out &= ~BWI_PCIM_GPIO_PWR_ON;
 928         gpio_en |= BWI_PCIM_GPIO_PWR_ON;
 929         if (with_pll) {
 930                 gpio_out |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 931                 gpio_en |= BWI_PCIM_GPIO_PLL_PWR_OFF;
 932         }
 933
 934         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, gpio_out, 4);
 935         pci_write_config(sc->sc_dev, BWI_PCIR_GPIO_ENABLE, gpio_en, 4);
 936         return 0;
 937 }
 938
 939 int
 940 bwi_regwin_switch(struct bwi_softc *sc, struct bwi_regwin *rw,
 941                   struct bwi_regwin **old_rw)
 942 {
 943         int error;
 944
 945         if (old_rw != NULL)
 946                 *old_rw = NULL;
 947
 948         if (!BWI_REGWIN_EXIST(rw))
 949                 return EINVAL;
 950
 951         if (sc->sc_cur_regwin != rw) {
 952                 error = bwi_regwin_select(sc, rw->rw_id);
 953                 if (error) {
 954                         if_printf(&sc->sc_ic.ic_if, "can't select regwin %d\n",
 955                                   rw->rw_id);
 956                         return error;
 957                 }
 958         }
 959
 960         if (old_rw != NULL)
 961                 *old_rw = sc->sc_cur_regwin;
 962         sc->sc_cur_regwin = rw;
 963         return 0;
 964 }
 965
 966 static int
 967 bwi_regwin_select(struct bwi_softc *sc, int id)
 968 {
 969         uint32_t win = BWI_PCIM_REGWIN(id);
 970         int i;
 971
 972 #define RETRY_MAX       50
 973         for (i = 0; i < RETRY_MAX; ++i) {
 974                 pci_write_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, win, 4);
 975                 if (pci_read_config(sc->sc_dev, BWI_PCIR_SEL_REGWIN, 4) == win)
 976                         return 0;
 977                 DELAY(10);
 978         }
 979 #undef RETRY_MAX
 980
 981         return ENXIO;
 982 }
 983
 984 static void
 985 bwi_regwin_info(struct bwi_softc *sc, uint16_t *type, uint8_t *rev)
 986 {
 987         uint32_t val;
 988
 989         val = CSR_READ_4(sc, BWI_ID_HI);
 990         *type = BWI_ID_HI_REGWIN_TYPE(val);
 991         *rev = BWI_ID_HI_REGWIN_REV(val);
 992
 993         DPRINTF(sc, BWI_DBG_ATTACH, "regwin: type 0x%03x, rev %d, "
 994                 "vendor 0x%04x\n", *type, *rev,
 995                 __SHIFTOUT(val, BWI_ID_HI_REGWIN_VENDOR_MASK));
 996 }
 997
 998 static int
 999 bwi_bbp_attach(struct bwi_softc *sc)
1000 {
1001         uint16_t bbp_id, rw_type;
1002         uint8_t rw_rev;
1003         uint32_t info;
1004         int error, nregwin, i;
1005
1006         /*
1007          * Get 0th regwin information
1008          * NOTE: 0th regwin should exist
1009          */
1010         error = bwi_regwin_select(sc, 0);
1011         if (error) {
1012                 device_printf(sc->sc_dev, "can't select regwin 0\n");
1013                 return error;
1014         }
1015         bwi_regwin_info(sc, &rw_type, &rw_rev);
1016
1017         /*
1018          * Find out BBP id
1019          */
1020         bbp_id = 0;
1021         info = 0;
1022         if (rw_type == BWI_REGWIN_T_COM) {
1023                 info = CSR_READ_4(sc, BWI_INFO);
1024                 bbp_id = __SHIFTOUT(info, BWI_INFO_BBPID_MASK);
1025
1026                 BWI_CREATE_REGWIN(&sc->sc_com_regwin, 0, rw_type, rw_rev);
1027
1028                 sc->sc_cap = CSR_READ_4(sc, BWI_CAPABILITY);
1029         } else {
1030                 uint16_t did = pci_get_device(sc->sc_dev);
1031                 uint8_t revid = pci_get_revid(sc->sc_dev);
1032
1033                 for (i = 0; i < NELEM(bwi_bbpid_map); ++i) {
1034                         if (did >= bwi_bbpid_map[i].did_min &&
1035                             did <= bwi_bbpid_map[i].did_max) {
1036                                 bbp_id = bwi_bbpid_map[i].bbp_id;
1037                                 break;
1038                         }
1039                 }
1040                 if (bbp_id == 0) {
1041                         device_printf(sc->sc_dev, "no BBP id for device id "
1042                                       "0x%04x\n", did);
1043                         return ENXIO;
1044                 }
1045
1046                 info = __SHIFTIN(revid, BWI_INFO_BBPREV_MASK) |
1047                        __SHIFTIN(0, BWI_INFO_BBPPKG_MASK);
1048         }
1049
1050         /*
1051          * Find out number of regwins
1052          */
1053         nregwin = 0;
1054         if (rw_type == BWI_REGWIN_T_COM && rw_rev >= 4) {
1055                 nregwin = __SHIFTOUT(info, BWI_INFO_NREGWIN_MASK);
1056         } else {
1057                 for (i = 0; i < NELEM(bwi_regwin_count); ++i) {
1058                         if (bwi_regwin_count[i].bbp_id == bbp_id) {
1059                                 nregwin = bwi_regwin_count[i].nregwin;
1060                                 break;
1061                         }
1062                 }
1063                 if (nregwin == 0) {
1064                         device_printf(sc->sc_dev, "no number of win for "
1065                                       "BBP id 0x%04x\n", bbp_id);
1066                         return ENXIO;
1067                 }
1068         }
1069
1070         /* Record BBP id/rev for later using */
1071         sc->sc_bbp_id = bbp_id;
1072         sc->sc_bbp_rev = __SHIFTOUT(info, BWI_INFO_BBPREV_MASK);
1073         sc->sc_bbp_pkg = __SHIFTOUT(info, BWI_INFO_BBPPKG_MASK);
1074         device_printf(sc->sc_dev, "BBP: id 0x%04x, rev 0x%x, pkg %d\n",
1075                       sc->sc_bbp_id, sc->sc_bbp_rev, sc->sc_bbp_pkg);
1076
1077         DPRINTF(sc, BWI_DBG_ATTACH, "nregwin %d, cap 0x%08x\n",
1078                 nregwin, sc->sc_cap);
1079
1080         /*
1081          * Create rest of the regwins
1082          */
1083
1084         /* Don't re-create common regwin, if it is already created */
1085         i = BWI_REGWIN_EXIST(&sc->sc_com_regwin) ? 1 : 0;
1086
1087         for (; i < nregwin; ++i) {
1088                 /*
1089                  * Get regwin information
1090                  */
1091                 error = bwi_regwin_select(sc, i);
1092                 if (error) {
1093                         device_printf(sc->sc_dev,
1094                                       "can't select regwin %d\n", i);
1095                         return error;
1096                 }
1097                 bwi_regwin_info(sc, &rw_type, &rw_rev);
1098
1099                 /*
1100                  * Try attach:
1101                  * 1) Bus (PCI/PCIE) regwin
1102                  * 2) MAC regwin
1103                  * Ignore rest types of regwin
1104                  */
1105                 if (rw_type == BWI_REGWIN_T_BUSPCI ||
1106                     rw_type == BWI_REGWIN_T_BUSPCIE) {
1107                         if (BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1108                                 device_printf(sc->sc_dev,
1109                                               "bus regwin already exists\n");
1110                         } else {
1111                                 BWI_CREATE_REGWIN(&sc->sc_bus_regwin, i,
1112                                                   rw_type, rw_rev);
1113                         }
1114                 } else if (rw_type == BWI_REGWIN_T_MAC) {
1115                         /* XXX ignore return value */
1116                         bwi_mac_attach(sc, i, rw_rev);
1117                 }
1118         }
1119
1120         /* At least one MAC shold exist */
1121         if (!BWI_REGWIN_EXIST(&sc->sc_mac[0].mac_regwin)) {
1122                 device_printf(sc->sc_dev, "no MAC was found\n");
1123                 return ENXIO;
1124         }
1125         KKASSERT(sc->sc_nmac > 0);
1126
1127         /* Bus regwin must exist */
1128         if (!BWI_REGWIN_EXIST(&sc->sc_bus_regwin)) {
1129                 device_printf(sc->sc_dev, "no bus regwin was found\n");
1130                 return ENXIO;
1131         }
1132
1133         /* Start with first MAC */
1134         error = bwi_regwin_switch(sc, &sc->sc_mac[0].mac_regwin, NULL);
1135         if (error)
1136                 return error;
1137
1138         return 0;
1139 }
1140
1141 int
1142 bwi_bus_init(struct bwi_softc *sc, struct bwi_mac *mac)
1143 {
1144         struct bwi_regwin *old, *bus;
1145         uint32_t val;
1146         int error;
1147
1148         bus = &sc->sc_bus_regwin;
1149         KKASSERT(sc->sc_cur_regwin == &mac->mac_regwin);
1150
1151         /*
1152          * Tell bus to generate requested interrupts
1153          */
1154         if (bus->rw_rev < 6 && bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1155                 /*
1156                  * NOTE: Read BWI_FLAGS from MAC regwin
1157                  */
1158                 val = CSR_READ_4(sc, BWI_FLAGS);
1159
1160                 error = bwi_regwin_switch(sc, bus, &old);
1161                 if (error)
1162                         return error;
1163
1164                 CSR_SETBITS_4(sc, BWI_INTRVEC, (val & BWI_FLAGS_INTR_MASK));
1165         } else {
1166                 uint32_t mac_mask;
1167
1168                 mac_mask = 1 << mac->mac_id;
1169
1170                 error = bwi_regwin_switch(sc, bus, &old);
1171                 if (error)
1172                         return error;
1173
1174                 val = pci_read_config(sc->sc_dev, BWI_PCIR_INTCTL, 4);
1175                 val |= mac_mask << 8;
1176                 pci_write_config(sc->sc_dev, BWI_PCIR_INTCTL, val, 4);
1177         }
1178
1179         if (sc->sc_flags & BWI_F_BUS_INITED)
1180                 goto back;
1181
1182         if (bus->rw_type == BWI_REGWIN_T_BUSPCI) {
1183                 /*
1184                  * Enable prefetch and burst
1185                  */
1186                 CSR_SETBITS_4(sc, BWI_BUS_CONFIG,
1187                               BWI_BUS_CONFIG_PREFETCH | BWI_BUS_CONFIG_BURST);
1188
1189                 if (bus->rw_rev < 5) {
1190                         struct bwi_regwin *com = &sc->sc_com_regwin;
1191
1192                         /*
1193                          * Configure timeouts for bus operation
1194                          */
1195
1196                         /*
1197                          * Set service timeout and request timeout
1198                          */
1199                         CSR_SETBITS_4(sc, BWI_CONF_LO,
1200                         __SHIFTIN(BWI_CONF_LO_SERVTO, BWI_CONF_LO_SERVTO_MASK) |
1201                         __SHIFTIN(BWI_CONF_LO_REQTO, BWI_CONF_LO_REQTO_MASK));
1202
1203                         /*
1204                          * If there is common regwin, we switch to that regwin
1205                          * and switch back to bus regwin once we have done.
1206                          */
1207                         if (BWI_REGWIN_EXIST(com)) {
1208                                 error = bwi_regwin_switch(sc, com, NULL);
1209                                 if (error)
1210                                         return error;
1211                         }
1212
1213                         /* Let bus know what we have changed */
1214                         CSR_WRITE_4(sc, BWI_BUS_ADDR, BWI_BUS_ADDR_MAGIC);
1215                         CSR_READ_4(sc, BWI_BUS_ADDR); /* Flush */
1216                         CSR_WRITE_4(sc, BWI_BUS_DATA, 0);
1217                         CSR_READ_4(sc, BWI_BUS_DATA); /* Flush */
1218
1219                         if (BWI_REGWIN_EXIST(com)) {
1220                                 error = bwi_regwin_switch(sc, bus, NULL);
1221                                 if (error)
1222                                         return error;
1223                         }
1224                 } else if (bus->rw_rev >= 11) {
1225                         /*
1226                          * Enable memory read multiple
1227                          */
1228                         CSR_SETBITS_4(sc, BWI_BUS_CONFIG, BWI_BUS_CONFIG_MRM);
1229                 }
1230         } else {
1231                 /* TODO:PCIE */
1232         }
1233
1234         sc->sc_flags |= BWI_F_BUS_INITED;
1235 back:
1236         return bwi_regwin_switch(sc, old, NULL);
1237 }
1238
1239 static void
1240 bwi_get_card_flags(struct bwi_softc *sc)
1241 {
1242         sc->sc_card_flags = bwi_read_sprom(sc, BWI_SPROM_CARD_FLAGS);
1243         if (sc->sc_card_flags == 0xffff)
1244                 sc->sc_card_flags = 0;
1245
1246         if (sc->sc_pci_subvid == PCI_VENDOR_APPLE &&
1247             sc->sc_pci_subdid == 0x4e && /* XXX */
1248             sc->sc_pci_revid > 0x40)
1249                 sc->sc_card_flags |= BWI_CARD_F_PA_GPIO9;
1250
1251         DPRINTF(sc, BWI_DBG_ATTACH, "card flags 0x%04x\n", sc->sc_card_flags);
1252 }
1253
1254 static void
1255 bwi_get_eaddr(struct bwi_softc *sc, uint16_t eaddr_ofs, uint8_t *eaddr)
1256 {
1257         int i;
1258
1259         for (i = 0; i < 3; ++i) {
1260                 *((uint16_t *)eaddr + i) =
1261                         htobe16(bwi_read_sprom(sc, eaddr_ofs + 2 * i));
1262         }
1263 }
1264
1265 static void
1266 bwi_get_clock_freq(struct bwi_softc *sc, struct bwi_clock_freq *freq)
1267 {
1268         struct bwi_regwin *com;
1269         uint32_t val;
1270         u_int div;
1271         int src;
1272
1273         bzero(freq, sizeof(*freq));
1274         com = &sc->sc_com_regwin;
1275
1276         KKASSERT(BWI_REGWIN_EXIST(com));
1277         KKASSERT(sc->sc_cur_regwin == com);
1278         KKASSERT(sc->sc_cap & BWI_CAP_CLKMODE);
1279
1280         /*
1281          * Calculate clock frequency
1282          */
1283         src = -1;
1284         div = 0;
1285         if (com->rw_rev < 6) {
1286                 val = pci_read_config(sc->sc_dev, BWI_PCIR_GPIO_OUT, 4);
1287                 if (val & BWI_PCIM_GPIO_OUT_CLKSRC) {
1288                         src = BWI_CLKSRC_PCI;
1289                         div = 64;
1290                 } else {
1291                         src = BWI_CLKSRC_CS_OSC;
1292                         div = 32;
1293                 }
1294         } else if (com->rw_rev < 10) {
1295                 val = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1296
1297                 src = __SHIFTOUT(val, BWI_CLOCK_CTRL_CLKSRC);
1298                 if (src == BWI_CLKSRC_LP_OSC) {
1299                         div = 1;
1300                 } else {
1301                         div = (__SHIFTOUT(val, BWI_CLOCK_CTRL_FDIV) + 1) << 2;
1302
1303                         /* Unknown source */
1304                         if (src >= BWI_CLKSRC_MAX)
1305                                 src = BWI_CLKSRC_CS_OSC;
1306                 }
1307         } else {
1308                 val = CSR_READ_4(sc, BWI_CLOCK_INFO);
1309
1310                 src = BWI_CLKSRC_CS_OSC;
1311                 div = (__SHIFTOUT(val, BWI_CLOCK_INFO_FDIV) + 1) << 2;
1312         }
1313
1314         KKASSERT(src >= 0 && src < BWI_CLKSRC_MAX);
1315         KKASSERT(div != 0);
1316
1317         DPRINTF(sc, BWI_DBG_ATTACH, "clksrc %s\n",
1318                 src == BWI_CLKSRC_PCI ? "PCI" :
1319                 (src == BWI_CLKSRC_LP_OSC ? "LP_OSC" : "CS_OSC"));
1320
1321         freq->clkfreq_min = bwi_clkfreq[src].freq_min / div;
1322         freq->clkfreq_max = bwi_clkfreq[src].freq_max / div;
1323
1324         DPRINTF(sc, BWI_DBG_ATTACH, "clkfreq min %u, max %u\n",
1325                 freq->clkfreq_min, freq->clkfreq_max);
1326 }
1327
1328 static int
1329 bwi_set_clock_mode(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
1330 {
1331         struct bwi_regwin *old, *com;
1332         uint32_t clk_ctrl, clk_src;
1333         int error, pwr_off = 0;
1334
1335         com = &sc->sc_com_regwin;
1336         if (!BWI_REGWIN_EXIST(com))
1337                 return 0;
1338
1339         if (com->rw_rev >= 10 || com->rw_rev < 6)
1340                 return 0;
1341
1342         /*
1343          * For common regwin whose rev is [6, 10), the chip
1344          * must be capable to change clock mode.
1345          */
1346         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
1347                 return 0;
1348
1349         error = bwi_regwin_switch(sc, com, &old);
1350         if (error)
1351                 return error;
1352
1353         if (clk_mode == BWI_CLOCK_MODE_FAST)
1354                 bwi_power_on(sc, 0);    /* Don't turn on PLL */
1355
1356         clk_ctrl = CSR_READ_4(sc, BWI_CLOCK_CTRL);
1357         clk_src = __SHIFTOUT(clk_ctrl, BWI_CLOCK_CTRL_CLKSRC);
1358
1359         switch (clk_mode) {
1360         case BWI_CLOCK_MODE_FAST:
1361                 clk_ctrl &= ~BWI_CLOCK_CTRL_SLOW;
1362                 clk_ctrl |= BWI_CLOCK_CTRL_IGNPLL;
1363                 break;
1364         case BWI_CLOCK_MODE_SLOW:
1365                 clk_ctrl |= BWI_CLOCK_CTRL_SLOW;
1366                 break;
1367         case BWI_CLOCK_MODE_DYN:
1368                 clk_ctrl &= ~(BWI_CLOCK_CTRL_SLOW |
1369                               BWI_CLOCK_CTRL_IGNPLL |
1370                               BWI_CLOCK_CTRL_NODYN);
1371                 if (clk_src != BWI_CLKSRC_CS_OSC) {
1372                         clk_ctrl |= BWI_CLOCK_CTRL_NODYN;
1373                         pwr_off = 1;
1374                 }
1375                 break;
1376         }
1377         CSR_WRITE_4(sc, BWI_CLOCK_CTRL, clk_ctrl);
1378
1379         if (pwr_off)
1380                 bwi_power_off(sc, 0);   /* Leave PLL as it is */
1381
1382         return bwi_regwin_switch(sc, old, NULL);
1383 }
1384
1385 static int
1386 bwi_set_clock_delay(struct bwi_softc *sc)
1387 {
1388         struct bwi_regwin *old, *com;
1389         int error;
1390
1391         com = &sc->sc_com_regwin;
1392         if (!BWI_REGWIN_EXIST(com))
1393                 return 0;
1394
1395         error = bwi_regwin_switch(sc, com, &old);
1396         if (error)
1397                 return error;
1398
1399         if (sc->sc_bbp_id == BWI_BBPID_BCM4321) {
1400                 if (sc->sc_bbp_rev == 0)
1401                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC0);
1402                 else if (sc->sc_bbp_rev == 1)
1403                         CSR_WRITE_4(sc, BWI_CONTROL, BWI_CONTROL_MAGIC1);
1404         }
1405
1406         if (sc->sc_cap & BWI_CAP_CLKMODE) {
1407                 if (com->rw_rev >= 10) {
1408                         CSR_FILT_SETBITS_4(sc, BWI_CLOCK_INFO, 0xffff, 0x40000);
1409                 } else {
1410                         struct bwi_clock_freq freq;
1411
1412                         bwi_get_clock_freq(sc, &freq);
1413                         CSR_WRITE_4(sc, BWI_PLL_ON_DELAY,
1414                                 howmany(freq.clkfreq_max * 150, 1000000));
1415                         CSR_WRITE_4(sc, BWI_FREQ_SEL_DELAY,
1416                                 howmany(freq.clkfreq_max * 15, 1000000));
1417                 }
1418         }
1419
1420         return bwi_regwin_switch(sc, old, NULL);
1421 }
1422
1423 static void
1424 bwi_init(void *xsc)
1425 {
1426         bwi_init_statechg(xsc, 1);
1427 }
1428
1429 static void
1430 bwi_init_statechg(struct bwi_softc *sc, int statechg)
1431 {
1432         struct ieee80211com *ic = &sc->sc_ic;
1433         struct ifnet *ifp = &ic->ic_if;
1434         struct bwi_mac *mac;
1435         int error;
1436
1437         ASSERT_SERIALIZED(ifp->if_serializer);
1438
1439         error = bwi_stop(sc, statechg);
1440         if (error) {
1441                 if_printf(ifp, "can't stop\n");
1442                 return;
1443         }
1444
1445         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_FAST);
1446
1447         /* TODO: 2 MAC */
1448
1449         mac = &sc->sc_mac[0];
1450         error = bwi_regwin_switch(sc, &mac->mac_regwin, NULL);
1451         if (error)
1452                 goto back;
1453
1454         error = bwi_mac_init(mac);
1455         if (error)
1456                 goto back;
1457
1458         bwi_bbp_power_on(sc, BWI_CLOCK_MODE_DYN);
1459
1460         bcopy(IF_LLADDR(ifp), ic->ic_myaddr, sizeof(ic->ic_myaddr));
1461
1462         bwi_set_bssid(sc, bwi_zero_addr);       /* Clear BSSID */
1463         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_MYADDR, ic->ic_myaddr);
1464
1465         bwi_mac_reset_hwkeys(mac);
1466
1467         if ((mac->mac_flags & BWI_MAC_F_HAS_TXSTATS) == 0) {
1468                 int i;
1469
1470 #define NRETRY  1000
1471                 /*
1472                  * Drain any possible pending TX status
1473                  */
1474                 for (i = 0; i < NRETRY; ++i) {
1475                         if ((CSR_READ_4(sc, BWI_TXSTATUS0) &
1476                              BWI_TXSTATUS0_VALID) == 0)
1477                                 break;
1478                         CSR_READ_4(sc, BWI_TXSTATUS1);
1479                 }
1480                 if (i == NRETRY)
1481                         if_printf(ifp, "can't drain TX status\n");
1482 #undef NRETRY
1483         }
1484
1485         if (mac->mac_phy.phy_mode == IEEE80211_MODE_11G)
1486                 bwi_mac_updateslot(mac, 1);
1487
1488         /* Start MAC */
1489         error = bwi_mac_start(mac);
1490         if (error)
1491                 goto back;
1492
1493         /* Enable intrs */
1494         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1495
1496         ifp->if_flags |= IFF_RUNNING;
1497         ifq_clr_oactive(&ifp->if_snd);
1498
1499         if (statechg) {
1500                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
1501                         if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)
1502                                 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1);
1503                 } else {
1504                         ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
1505                 }
1506         } else {
1507                 ieee80211_new_state(ic, ic->ic_state, -1);
1508         }
1509 back:
1510         if (error)
1511                 bwi_stop(sc, 1);
1512         else
1513                 ifp->if_start(ifp);
1514 }
1515
1516 static int
1517 bwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t req, struct ucred *cr)
1518 {
1519         struct bwi_softc *sc = ifp->if_softc;
1520         int error = 0;
1521
1522         ASSERT_SERIALIZED(ifp->if_serializer);
1523
1524         switch (cmd) {
1525         case SIOCSIFFLAGS:
1526                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1527                     (IFF_UP | IFF_RUNNING)) {
1528                         struct bwi_mac *mac;
1529                         int promisc = -1;
1530
1531                         KKASSERT(sc->sc_cur_regwin->rw_type ==
1532                                  BWI_REGWIN_T_MAC);
1533                         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1534
1535                         if ((ifp->if_flags & IFF_PROMISC) &&
1536                             (sc->sc_flags & BWI_F_PROMISC) == 0) {
1537                                 promisc = 1;
1538                                 sc->sc_flags |= BWI_F_PROMISC;
1539                         } else if ((ifp->if_flags & IFF_PROMISC) == 0 &&
1540                                    (sc->sc_flags & BWI_F_PROMISC)) {
1541                                 promisc = 0;
1542                                 sc->sc_flags &= ~BWI_F_PROMISC;
1543                         }
1544
1545                         if (promisc >= 0)
1546                                 bwi_mac_set_promisc(mac, promisc);
1547                 }
1548
1549                 if (ifp->if_flags & IFF_UP) {
1550                         if ((ifp->if_flags & IFF_RUNNING) == 0)
1551                                 bwi_init(sc);
1552                 } else {
1553                         if (ifp->if_flags & IFF_RUNNING)
1554                                 bwi_stop(sc, 1);
1555                 }
1556                 break;
1557         default:
1558                 error = ieee80211_ioctl(&sc->sc_ic, cmd, req, cr);
1559                 break;
1560         }
1561
1562         if (error == ENETRESET) {
1563                 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) ==
1564                     (IFF_UP | IFF_RUNNING))
1565                         bwi_init(sc);
1566                 error = 0;
1567         }
1568         return error;
1569 }
1570
1571 static void
1572 bwi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
1573 {
1574         struct bwi_softc *sc = ifp->if_softc;
1575         struct ieee80211com *ic = &sc->sc_ic;
1576         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
1577         int trans, idx;
1578
1579         ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
1580         ASSERT_SERIALIZED(ifp->if_serializer);
1581
1582         if (ifq_is_oactive(&ifp->if_snd) || (ifp->if_flags & IFF_RUNNING) == 0)
1583                 return;
1584
1585         trans = 0;
1586         idx = tbd->tbd_idx;
1587
1588         while (tbd->tbd_buf[idx].tb_mbuf == NULL) {
1589                 struct ieee80211_frame *wh;
1590                 struct ieee80211_node *ni;
1591                 struct mbuf *m;
1592                 int mgt_pkt = 0;
1593
1594                 if (!IF_QEMPTY(&ic->ic_mgtq)) {
1595                         IF_DEQUEUE(&ic->ic_mgtq, m);
1596
1597                         ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
1598                         m->m_pkthdr.rcvif = NULL;
1599
1600                         mgt_pkt = 1;
1601                 } else if (!ifq_is_empty(&ifp->if_snd)) {
1602                         struct ether_header *eh;
1603
1604                         if (ic->ic_state != IEEE80211_S_RUN) {
1605                                 ifq_purge(&ifp->if_snd);
1606                                 break;
1607                         }
1608
1609                         m = ifq_dequeue(&ifp->if_snd, NULL);
1610                         if (m == NULL)
1611                                 break;
1612
1613                         if (m->m_len < sizeof(*eh)) {
1614                                 m = m_pullup(m, sizeof(*eh));
1615                                 if (m == NULL) {
1616                                         IFNET_STAT_INC(ifp, oerrors, 1);
1617                                         continue;
1618                                 }
1619                         }
1620                         eh = mtod(m, struct ether_header *);
1621
1622                         ni = ieee80211_find_txnode(ic, eh->ether_dhost);
1623                         if (ni == NULL) {
1624                                 m_freem(m);
1625                                 IFNET_STAT_INC(ifp, oerrors, 1);
1626                                 continue;
1627                         }
1628
1629                         /* TODO: PS */
1630
1631                         BPF_MTAP(ifp, m);
1632
1633                         m = ieee80211_encap(ic, m, ni);
1634                         if (m == NULL) {
1635                                 ieee80211_free_node(ni);
1636                                 IFNET_STAT_INC(ifp, oerrors, 1);
1637                                 continue;
1638                         }
1639                 } else {
1640                         break;
1641                 }
1642
1643                 if (ic->ic_rawbpf != NULL)
1644                         bpf_mtap(ic->ic_rawbpf, m);
1645
1646                 wh = mtod(m, struct ieee80211_frame *);
1647                 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1648                         if (ieee80211_crypto_encap(ic, ni, m) == NULL) {
1649                                 ieee80211_free_node(ni);
1650                                 m_freem(m);
1651                                 IFNET_STAT_INC(ifp, oerrors, 1);
1652                                 continue;
1653                         }
1654                 }
1655                 wh = NULL;      /* Catch any invalid use */
1656
1657                 if (bwi_encap(sc, idx, m, &ni, mgt_pkt) != 0) {
1658                         /* 'm' is freed in bwi_encap() if we reach here */
1659                         if (ni != NULL)
1660                                 ieee80211_free_node(ni);
1661                         IFNET_STAT_INC(ifp, oerrors, 1);
1662                         continue;
1663                 }
1664
1665                 trans = 1;
1666                 tbd->tbd_used++;
1667                 idx = (idx + 1) % BWI_TX_NDESC;
1668
1669                 if (tbd->tbd_used + BWI_TX_NSPRDESC >= BWI_TX_NDESC) {
1670                         ifq_set_oactive(&ifp->if_snd);
1671                         break;
1672                 }
1673         }
1674         tbd->tbd_idx = idx;
1675
1676         if (trans)
1677                 sc->sc_tx_timer = 5;
1678         ifp->if_timer = 1;
1679 }
1680
1681 static void
1682 bwi_watchdog(struct ifnet *ifp)
1683 {
1684         struct bwi_softc *sc = ifp->if_softc;
1685
1686         ASSERT_SERIALIZED(ifp->if_serializer);
1687
1688         ifp->if_timer = 0;
1689
1690         if ((ifp->if_flags & IFF_RUNNING) == 0)
1691                 return;
1692
1693         if (sc->sc_tx_timer) {
1694                 if (--sc->sc_tx_timer == 0) {
1695                         if_printf(ifp, "watchdog timeout\n");
1696                         IFNET_STAT_INC(ifp, oerrors, 1);
1697                         /* TODO */
1698                 } else {
1699                         ifp->if_timer = 1;
1700                 }
1701         }
1702         ieee80211_watchdog(&sc->sc_ic);
1703 }
1704
1705 static int
1706 bwi_stop(struct bwi_softc *sc, int state_chg)
1707 {
1708         struct ieee80211com *ic = &sc->sc_ic;
1709         struct ifnet *ifp = &ic->ic_if;
1710         struct bwi_mac *mac;
1711         int i, error, pwr_off = 0;
1712
1713         ASSERT_SERIALIZED(ifp->if_serializer);
1714
1715         if (state_chg)
1716                 ieee80211_new_state(ic, IEEE80211_S_INIT, -1);
1717         else
1718                 bwi_newstate_begin(sc, IEEE80211_S_INIT);
1719
1720         if (ifp->if_flags & IFF_RUNNING) {
1721                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1722                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1723
1724                 bwi_disable_intrs(sc, BWI_ALL_INTRS);
1725                 CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1726                 bwi_mac_stop(mac);
1727         }
1728
1729         for (i = 0; i < sc->sc_nmac; ++i) {
1730                 struct bwi_regwin *old_rw;
1731
1732                 mac = &sc->sc_mac[i];
1733                 if ((mac->mac_flags & BWI_MAC_F_INITED) == 0)
1734                         continue;
1735
1736                 error = bwi_regwin_switch(sc, &mac->mac_regwin, &old_rw);
1737                 if (error)
1738                         continue;
1739
1740                 bwi_mac_shutdown(mac);
1741                 pwr_off = 1;
1742
1743                 bwi_regwin_switch(sc, old_rw, NULL);
1744         }
1745
1746         if (pwr_off)
1747                 bwi_bbp_power_off(sc);
1748
1749         sc->sc_tx_timer = 0;
1750         ifp->if_timer = 0;
1751         ifp->if_flags &= ~IFF_RUNNING;
1752         ifq_clr_oactive(&ifp->if_snd);
1753         return 0;
1754 }
1755
1756 static void
1757 bwi_intr(void *xsc)
1758 {
1759         struct bwi_softc *sc = xsc;
1760         struct bwi_mac *mac;
1761         struct ifnet *ifp = &sc->sc_ic.ic_if;
1762         uint32_t intr_status;
1763         uint32_t txrx_intr_status[BWI_TXRX_NRING];
1764         int i, txrx_error, tx = 0, rx_data = -1;
1765
1766         ASSERT_SERIALIZED(ifp->if_serializer);
1767
1768         if ((ifp->if_flags & IFF_RUNNING) == 0)
1769                 return;
1770
1771         /*
1772          * Get interrupt status
1773          */
1774         intr_status = CSR_READ_4(sc, BWI_MAC_INTR_STATUS);
1775         if (intr_status == 0xffffffff)  /* Not for us */
1776                 return;
1777
1778         DPRINTF(sc, BWI_DBG_INTR, "intr status 0x%08x\n", intr_status);
1779
1780         intr_status &= CSR_READ_4(sc, BWI_MAC_INTR_MASK);
1781         if (intr_status == 0)           /* Nothing is interesting */
1782                 return;
1783
1784         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1785         mac = (struct bwi_mac *)sc->sc_cur_regwin;
1786
1787         txrx_error = 0;
1788         DPRINTF(sc, BWI_DBG_INTR, "%s\n", "TX/RX intr");
1789         for (i = 0; i < BWI_TXRX_NRING; ++i) {
1790                 uint32_t mask;
1791
1792                 if (BWI_TXRX_IS_RX(i))
1793                         mask = BWI_TXRX_RX_INTRS;
1794                 else
1795                         mask = BWI_TXRX_TX_INTRS;
1796
1797                 txrx_intr_status[i] =
1798                 CSR_READ_4(sc, BWI_TXRX_INTR_STATUS(i)) & mask;
1799
1800                 _DPRINTF(sc, BWI_DBG_INTR, ", %d 0x%08x",
1801                          i, txrx_intr_status[i]);
1802
1803                 if (txrx_intr_status[i] & BWI_TXRX_INTR_ERROR) {
1804                         if_printf(ifp, "intr fatal TX/RX (%d) error 0x%08x\n",
1805                                   i, txrx_intr_status[i]);
1806                         txrx_error = 1;
1807                 }
1808         }
1809         _DPRINTF(sc, BWI_DBG_INTR, "%s\n", "");
1810
1811         /*
1812          * Acknowledge interrupt
1813          */
1814         CSR_WRITE_4(sc, BWI_MAC_INTR_STATUS, intr_status);
1815
1816         for (i = 0; i < BWI_TXRX_NRING; ++i)
1817                 CSR_WRITE_4(sc, BWI_TXRX_INTR_STATUS(i), txrx_intr_status[i]);
1818
1819         /* Disable all interrupts */
1820         bwi_disable_intrs(sc, BWI_ALL_INTRS);
1821
1822         if (intr_status & BWI_INTR_PHY_TXERR) {
1823                 if (mac->mac_flags & BWI_MAC_F_PHYE_RESET) {
1824                         if_printf(ifp, "intr PHY TX error\n");
1825                         /* XXX to netisr0? */
1826                         bwi_init_statechg(sc, 0);
1827                         return;
1828                 }
1829         }
1830
1831         if (txrx_error) {
1832                 /* TODO: reset device */
1833         }
1834
1835         if (intr_status & BWI_INTR_TBTT)
1836                 bwi_mac_config_ps(mac);
1837
1838         if (intr_status & BWI_INTR_EO_ATIM)
1839                 if_printf(ifp, "EO_ATIM\n");
1840
1841         if (intr_status & BWI_INTR_PMQ) {
1842                 for (;;) {
1843                         if ((CSR_READ_4(sc, BWI_MAC_PS_STATUS) & 0x8) == 0)
1844                                 break;
1845                 }
1846                 CSR_WRITE_2(sc, BWI_MAC_PS_STATUS, 0x2);
1847         }
1848
1849         if (intr_status & BWI_INTR_NOISE)
1850                 if_printf(ifp, "intr noise\n");
1851
1852         if (txrx_intr_status[0] & BWI_TXRX_INTR_RX)
1853                 rx_data = sc->sc_rxeof(sc);
1854
1855         if (txrx_intr_status[3] & BWI_TXRX_INTR_RX) {
1856                 sc->sc_txeof_status(sc);
1857                 tx = 1;
1858         }
1859
1860         if (intr_status & BWI_INTR_TX_DONE) {
1861                 bwi_txeof(sc);
1862                 tx = 1;
1863         }
1864
1865         /* Re-enable interrupts */
1866         bwi_enable_intrs(sc, BWI_INIT_INTRS);
1867
1868         if (sc->sc_blink_led != NULL && sc->sc_led_blink) {
1869                 int evt = BWI_LED_EVENT_NONE;
1870
1871                 if (tx && rx_data > 0) {
1872                         if (sc->sc_rx_rate > sc->sc_tx_rate)
1873                                 evt = BWI_LED_EVENT_RX;
1874                         else
1875                                 evt = BWI_LED_EVENT_TX;
1876                 } else if (tx) {
1877                         evt = BWI_LED_EVENT_TX;
1878                 } else if (rx_data > 0) {
1879                         evt = BWI_LED_EVENT_RX;
1880                 } else if (rx_data == 0) {
1881                         evt = BWI_LED_EVENT_POLL;
1882                 }
1883
1884                 if (evt != BWI_LED_EVENT_NONE)
1885                         bwi_led_event(sc, evt);
1886         }
1887 }
1888
1889 static void
1890 bwi_newstate_begin(struct bwi_softc *sc, enum ieee80211_state nstate)
1891 {
1892         callout_stop(&sc->sc_scan_ch);
1893         callout_stop(&sc->sc_calib_ch);
1894
1895         ieee80211_ratectl_newstate(&sc->sc_ic, nstate);
1896         bwi_led_newstate(sc, nstate);
1897
1898         if (nstate == IEEE80211_S_INIT)
1899                 sc->sc_txpwrcb_type = BWI_TXPWR_INIT;
1900 }
1901
1902 static int
1903 bwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
1904 {
1905         struct bwi_softc *sc = ic->ic_if.if_softc;
1906         struct ifnet *ifp = &ic->ic_if;
1907         int error;
1908
1909         ASSERT_SERIALIZED(ifp->if_serializer);
1910
1911         bwi_newstate_begin(sc, nstate);
1912
1913         if (nstate == IEEE80211_S_INIT)
1914                 goto back;
1915
1916         error = bwi_set_chan(sc, ic->ic_curchan);
1917         if (error) {
1918                 if_printf(ifp, "can't set channel to %u\n",
1919                           ieee80211_chan2ieee(ic, ic->ic_curchan));
1920                 return error;
1921         }
1922
1923         if (ic->ic_opmode == IEEE80211_M_MONITOR) {
1924                 /* Nothing to do */
1925         } else if (nstate == IEEE80211_S_RUN) {
1926                 struct bwi_mac *mac;
1927
1928                 bwi_set_bssid(sc, ic->ic_bss->ni_bssid);
1929
1930                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
1931                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
1932
1933                 /* Initial TX power calibration */
1934                 bwi_mac_calibrate_txpower(mac, BWI_TXPWR_INIT);
1935 #ifdef notyet
1936                 sc->sc_txpwrcb_type = BWI_TXPWR_FORCE;
1937 #else
1938                 sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
1939 #endif
1940         } else {
1941                 bwi_set_bssid(sc, bwi_zero_addr);
1942         }
1943
1944 back:
1945         error = sc->sc_newstate(ic, nstate, arg);
1946
1947         if (nstate == IEEE80211_S_SCAN) {
1948                 callout_reset(&sc->sc_scan_ch,
1949                               (sc->sc_dwell_time * hz) / 1000,
1950                               bwi_next_scan, sc);
1951         } else if (nstate == IEEE80211_S_RUN) {
1952                 callout_reset(&sc->sc_calib_ch, hz, bwi_calibrate, sc);
1953         }
1954         return error;
1955 }
1956
1957 static int
1958 bwi_media_change(struct ifnet *ifp)
1959 {
1960         int error;
1961
1962         ASSERT_SERIALIZED(ifp->if_serializer);
1963
1964         error = ieee80211_media_change(ifp);
1965         if (error != ENETRESET)
1966                 return error;
1967
1968         if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING))
1969                 bwi_init(ifp->if_softc);
1970         return 0;
1971 }
1972
1973 static int
1974 bwi_dma_alloc(struct bwi_softc *sc)
1975 {
1976         int error, i, has_txstats;
1977         bus_addr_t lowaddr = 0;
1978         bus_size_t tx_ring_sz, rx_ring_sz, desc_sz = 0;
1979         uint32_t txrx_ctrl_step = 0;
1980
1981         has_txstats = 0;
1982         for (i = 0; i < sc->sc_nmac; ++i) {
1983                 if (sc->sc_mac[i].mac_flags & BWI_MAC_F_HAS_TXSTATS) {
1984                         has_txstats = 1;
1985                         break;
1986                 }
1987         }
1988
1989         switch (sc->sc_bus_space) {
1990         case BWI_BUS_SPACE_30BIT:
1991         case BWI_BUS_SPACE_32BIT:
1992                 if (sc->sc_bus_space == BWI_BUS_SPACE_30BIT)
1993                         lowaddr = BWI_BUS_SPACE_MAXADDR;
1994                 else
1995                         lowaddr = BUS_SPACE_MAXADDR_32BIT;
1996                 desc_sz = sizeof(struct bwi_desc32);
1997                 txrx_ctrl_step = 0x20;
1998
1999                 sc->sc_init_tx_ring = bwi_init_tx_ring32;
2000                 sc->sc_free_tx_ring = bwi_free_tx_ring32;
2001                 sc->sc_init_rx_ring = bwi_init_rx_ring32;
2002                 sc->sc_free_rx_ring = bwi_free_rx_ring32;
2003                 sc->sc_setup_rxdesc = bwi_setup_rx_desc32;
2004                 sc->sc_setup_txdesc = bwi_setup_tx_desc32;
2005                 sc->sc_rxeof = bwi_rxeof32;
2006                 sc->sc_start_tx = bwi_start_tx32;
2007                 if (has_txstats) {
2008                         sc->sc_init_txstats = bwi_init_txstats32;
2009                         sc->sc_free_txstats = bwi_free_txstats32;
2010                         sc->sc_txeof_status = bwi_txeof_status32;
2011                 }
2012                 break;
2013
2014         case BWI_BUS_SPACE_64BIT:
2015                 lowaddr = BUS_SPACE_MAXADDR;    /* XXX */
2016                 desc_sz = sizeof(struct bwi_desc64);
2017                 txrx_ctrl_step = 0x40;
2018
2019                 sc->sc_init_tx_ring = bwi_init_tx_ring64;
2020                 sc->sc_free_tx_ring = bwi_free_tx_ring64;
2021                 sc->sc_init_rx_ring = bwi_init_rx_ring64;
2022                 sc->sc_free_rx_ring = bwi_free_rx_ring64;
2023                 sc->sc_setup_rxdesc = bwi_setup_rx_desc64;
2024                 sc->sc_setup_txdesc = bwi_setup_tx_desc64;
2025                 sc->sc_rxeof = bwi_rxeof64;
2026                 sc->sc_start_tx = bwi_start_tx64;
2027                 if (has_txstats) {
2028                         sc->sc_init_txstats = bwi_init_txstats64;
2029                         sc->sc_free_txstats = bwi_free_txstats64;
2030                         sc->sc_txeof_status = bwi_txeof_status64;
2031                 }
2032                 break;
2033         }
2034
2035         KKASSERT(lowaddr != 0);
2036         KKASSERT(desc_sz != 0);
2037         KKASSERT(txrx_ctrl_step != 0);
2038
2039         tx_ring_sz = roundup(desc_sz * BWI_TX_NDESC, BWI_RING_ALIGN);
2040         rx_ring_sz = roundup(desc_sz * BWI_RX_NDESC, BWI_RING_ALIGN);
2041
2042         /*
2043          * Create top level DMA tag
2044          */
2045         error = bus_dma_tag_create(NULL, BWI_ALIGN, 0,
2046                                    lowaddr, BUS_SPACE_MAXADDR,
2047                                    NULL, NULL,
2048                                    MAXBSIZE,
2049                                    BUS_SPACE_UNRESTRICTED,
2050                                    BUS_SPACE_MAXSIZE_32BIT,
2051                                    0, &sc->sc_parent_dtag);
2052         if (error) {
2053                 device_printf(sc->sc_dev, "can't create parent DMA tag\n");
2054                 return error;
2055         }
2056
2057 #define TXRX_CTRL(idx)  (BWI_TXRX_CTRL_BASE + (idx) * txrx_ctrl_step)
2058
2059         /*
2060          * Create TX ring DMA stuffs
2061          */
2062         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2063                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2064                                    NULL, NULL,
2065                                    tx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2066                                    0, &sc->sc_txring_dtag);
2067         if (error) {
2068                 device_printf(sc->sc_dev, "can't create TX ring DMA tag\n");
2069                 return error;
2070         }
2071
2072         for (i = 0; i < BWI_TX_NRING; ++i) {
2073                 error = bwi_dma_ring_alloc(sc, sc->sc_txring_dtag,
2074                                            &sc->sc_tx_rdata[i], tx_ring_sz,
2075                                            TXRX_CTRL(i));
2076                 if (error) {
2077                         device_printf(sc->sc_dev, "%dth TX ring "
2078                                       "DMA alloc failed\n", i);
2079                         return error;
2080                 }
2081         }
2082
2083         /*
2084          * Create RX ring DMA stuffs
2085          */
2086         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2087                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2088                                    NULL, NULL,
2089                                    rx_ring_sz, 1, BUS_SPACE_MAXSIZE_32BIT,
2090                                    0, &sc->sc_rxring_dtag);
2091         if (error) {
2092                 device_printf(sc->sc_dev, "can't create RX ring DMA tag\n");
2093                 return error;
2094         }
2095
2096         error = bwi_dma_ring_alloc(sc, sc->sc_rxring_dtag, &sc->sc_rx_rdata,
2097                                    rx_ring_sz, TXRX_CTRL(0));
2098         if (error) {
2099                 device_printf(sc->sc_dev, "RX ring DMA alloc failed\n");
2100                 return error;
2101         }
2102
2103         if (has_txstats) {
2104                 error = bwi_dma_txstats_alloc(sc, TXRX_CTRL(3), desc_sz);
2105                 if (error) {
2106                         device_printf(sc->sc_dev,
2107                                       "TX stats DMA alloc failed\n");
2108                         return error;
2109                 }
2110         }
2111
2112 #undef TXRX_CTRL
2113
2114         return bwi_dma_mbuf_create(sc);
2115 }
2116
2117 static void
2118 bwi_dma_free(struct bwi_softc *sc)
2119 {
2120         if (sc->sc_txring_dtag != NULL) {
2121                 int i;
2122
2123                 for (i = 0; i < BWI_TX_NRING; ++i) {
2124                         struct bwi_ring_data *rd = &sc->sc_tx_rdata[i];
2125
2126                         if (rd->rdata_desc != NULL) {
2127                                 bus_dmamap_unload(sc->sc_txring_dtag,
2128                                                   rd->rdata_dmap);
2129                                 bus_dmamem_free(sc->sc_txring_dtag,
2130                                                 rd->rdata_desc,
2131                                                 rd->rdata_dmap);
2132                         }
2133                 }
2134                 bus_dma_tag_destroy(sc->sc_txring_dtag);
2135         }
2136
2137         if (sc->sc_rxring_dtag != NULL) {
2138                 struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2139
2140                 if (rd->rdata_desc != NULL) {
2141                         bus_dmamap_unload(sc->sc_rxring_dtag, rd->rdata_dmap);
2142                         bus_dmamem_free(sc->sc_rxring_dtag, rd->rdata_desc,
2143                                         rd->rdata_dmap);
2144                 }
2145                 bus_dma_tag_destroy(sc->sc_rxring_dtag);
2146         }
2147
2148         bwi_dma_txstats_free(sc);
2149         bwi_dma_mbuf_destroy(sc, BWI_TX_NRING, 1);
2150
2151         if (sc->sc_parent_dtag != NULL)
2152                 bus_dma_tag_destroy(sc->sc_parent_dtag);
2153 }
2154
2155 static int
2156 bwi_dma_ring_alloc(struct bwi_softc *sc, bus_dma_tag_t dtag,
2157                    struct bwi_ring_data *rd, bus_size_t size,
2158                    uint32_t txrx_ctrl)
2159 {
2160         int error;
2161
2162         error = bus_dmamem_alloc(dtag, &rd->rdata_desc,
2163                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2164                                  &rd->rdata_dmap);
2165         if (error) {
2166                 device_printf(sc->sc_dev, "can't allocate DMA mem\n");
2167                 return error;
2168         }
2169
2170         error = bus_dmamap_load(dtag, rd->rdata_dmap, rd->rdata_desc, size,
2171                                 bwi_dma_ring_addr, &rd->rdata_paddr,
2172                                 BUS_DMA_WAITOK);
2173         if (error) {
2174                 device_printf(sc->sc_dev, "can't load DMA mem\n");
2175                 bus_dmamem_free(dtag, rd->rdata_desc, rd->rdata_dmap);
2176                 rd->rdata_desc = NULL;
2177                 return error;
2178         }
2179
2180         rd->rdata_txrx_ctrl = txrx_ctrl;
2181         return 0;
2182 }
2183
2184 static int
2185 bwi_dma_txstats_alloc(struct bwi_softc *sc, uint32_t ctrl_base,
2186                       bus_size_t desc_sz)
2187 {
2188         struct bwi_txstats_data *st;
2189         bus_size_t dma_size;
2190         int error;
2191
2192         st = kmalloc(sizeof(*st), M_DEVBUF, M_WAITOK | M_ZERO);
2193         sc->sc_txstats = st;
2194
2195         /*
2196          * Create TX stats descriptor DMA stuffs
2197          */
2198         dma_size = roundup(desc_sz * BWI_TXSTATS_NDESC, BWI_RING_ALIGN);
2199
2200         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_RING_ALIGN, 0,
2201                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2202                                    NULL, NULL,
2203                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2204                                    0, &st->stats_ring_dtag);
2205         if (error) {
2206                 device_printf(sc->sc_dev, "can't create txstats ring "
2207                               "DMA tag\n");
2208                 return error;
2209         }
2210
2211         error = bus_dmamem_alloc(st->stats_ring_dtag, &st->stats_ring,
2212                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2213                                  &st->stats_ring_dmap);
2214         if (error) {
2215                 device_printf(sc->sc_dev, "can't allocate txstats ring "
2216                               "DMA mem\n");
2217                 bus_dma_tag_destroy(st->stats_ring_dtag);
2218                 st->stats_ring_dtag = NULL;
2219                 return error;
2220         }
2221
2222         error = bus_dmamap_load(st->stats_ring_dtag, st->stats_ring_dmap,
2223                                 st->stats_ring, dma_size,
2224                                 bwi_dma_ring_addr, &st->stats_ring_paddr,
2225                                 BUS_DMA_WAITOK);
2226         if (error) {
2227                 device_printf(sc->sc_dev, "can't load txstats ring DMA mem\n");
2228                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2229                                 st->stats_ring_dmap);
2230                 bus_dma_tag_destroy(st->stats_ring_dtag);
2231                 st->stats_ring_dtag = NULL;
2232                 return error;
2233         }
2234
2235         /*
2236          * Create TX stats DMA stuffs
2237          */
2238         dma_size = roundup(sizeof(struct bwi_txstats) * BWI_TXSTATS_NDESC,
2239                            BWI_ALIGN);
2240
2241         error = bus_dma_tag_create(sc->sc_parent_dtag, BWI_ALIGN, 0,
2242                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2243                                    NULL, NULL,
2244                                    dma_size, 1, BUS_SPACE_MAXSIZE_32BIT,
2245                                    0, &st->stats_dtag);
2246         if (error) {
2247                 device_printf(sc->sc_dev, "can't create txstats DMA tag\n");
2248                 return error;
2249         }
2250
2251         error = bus_dmamem_alloc(st->stats_dtag, (void **)&st->stats,
2252                                  BUS_DMA_WAITOK | BUS_DMA_ZERO,
2253                                  &st->stats_dmap);
2254         if (error) {
2255                 device_printf(sc->sc_dev, "can't allocate txstats DMA mem\n");
2256                 bus_dma_tag_destroy(st->stats_dtag);
2257                 st->stats_dtag = NULL;
2258                 return error;
2259         }
2260
2261         error = bus_dmamap_load(st->stats_dtag, st->stats_dmap, st->stats,
2262                                 dma_size, bwi_dma_ring_addr, &st->stats_paddr,
2263                                 BUS_DMA_WAITOK);
2264         if (error) {
2265                 device_printf(sc->sc_dev, "can't load txstats DMA mem\n");
2266                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2267                 bus_dma_tag_destroy(st->stats_dtag);
2268                 st->stats_dtag = NULL;
2269                 return error;
2270         }
2271
2272         st->stats_ctrl_base = ctrl_base;
2273         return 0;
2274 }
2275
2276 static void
2277 bwi_dma_txstats_free(struct bwi_softc *sc)
2278 {
2279         struct bwi_txstats_data *st;
2280
2281         if (sc->sc_txstats == NULL)
2282                 return;
2283         st = sc->sc_txstats;
2284
2285         if (st->stats_ring_dtag != NULL) {
2286                 bus_dmamap_unload(st->stats_ring_dtag, st->stats_ring_dmap);
2287                 bus_dmamem_free(st->stats_ring_dtag, st->stats_ring,
2288                                 st->stats_ring_dmap);
2289                 bus_dma_tag_destroy(st->stats_ring_dtag);
2290         }
2291
2292         if (st->stats_dtag != NULL) {
2293                 bus_dmamap_unload(st->stats_dtag, st->stats_dmap);
2294                 bus_dmamem_free(st->stats_dtag, st->stats, st->stats_dmap);
2295                 bus_dma_tag_destroy(st->stats_dtag);
2296         }
2297
2298         kfree(st, M_DEVBUF);
2299 }
2300
2301 static void
2302 bwi_dma_ring_addr(void *arg, bus_dma_segment_t *seg, int nseg, int error)
2303 {
2304         KASSERT(nseg == 1, ("too many segments"));
2305         *((bus_addr_t *)arg) = seg->ds_addr;
2306 }
2307
2308 static int
2309 bwi_dma_mbuf_create(struct bwi_softc *sc)
2310 {
2311         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2312         int i, j, k, ntx, error;
2313
2314         /*
2315          * Create TX/RX mbuf DMA tag
2316          */
2317         error = bus_dma_tag_create(sc->sc_parent_dtag, 1, 0,
2318                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2319                                    NULL, NULL, MCLBYTES, 1,
2320                                    BUS_SPACE_MAXSIZE_32BIT,
2321                                    0, &sc->sc_buf_dtag);
2322         if (error) {
2323                 device_printf(sc->sc_dev, "can't create mbuf DMA tag\n");
2324                 return error;
2325         }
2326
2327         ntx = 0;
2328
2329         /*
2330          * Create TX mbuf DMA map
2331          */
2332         for (i = 0; i < BWI_TX_NRING; ++i) {
2333                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2334
2335                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2336                         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2337                                                   &tbd->tbd_buf[j].tb_dmap);
2338                         if (error) {
2339                                 device_printf(sc->sc_dev, "can't create "
2340                                               "%dth tbd, %dth DMA map\n", i, j);
2341
2342                                 ntx = i;
2343                                 for (k = 0; k < j; ++k) {
2344                                         bus_dmamap_destroy(sc->sc_buf_dtag,
2345                                                 tbd->tbd_buf[k].tb_dmap);
2346                                 }
2347                                 goto fail;
2348                         }
2349                 }
2350         }
2351         ntx = BWI_TX_NRING;
2352
2353         /*
2354          * Create RX mbuf DMA map and a spare DMA map
2355          */
2356         error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2357                                   &rbd->rbd_tmp_dmap);
2358         if (error) {
2359                 device_printf(sc->sc_dev,
2360                               "can't create spare RX buf DMA map\n");
2361                 goto fail;
2362         }
2363
2364         for (j = 0; j < BWI_RX_NDESC; ++j) {
2365                 error = bus_dmamap_create(sc->sc_buf_dtag, 0,
2366                                           &rbd->rbd_buf[j].rb_dmap);
2367                 if (error) {
2368                         device_printf(sc->sc_dev, "can't create %dth "
2369                                       "RX buf DMA map\n", j);
2370
2371                         for (k = 0; k < j; ++k) {
2372                                 bus_dmamap_destroy(sc->sc_buf_dtag,
2373                                         rbd->rbd_buf[j].rb_dmap);
2374                         }
2375                         bus_dmamap_destroy(sc->sc_buf_dtag,
2376                                            rbd->rbd_tmp_dmap);
2377                         goto fail;
2378                 }
2379         }
2380
2381         return 0;
2382 fail:
2383         bwi_dma_mbuf_destroy(sc, ntx, 0);
2384         return error;
2385 }
2386
2387 static void
2388 bwi_dma_mbuf_destroy(struct bwi_softc *sc, int ntx, int nrx)
2389 {
2390         int i, j;
2391
2392         if (sc->sc_buf_dtag == NULL)
2393                 return;
2394
2395         for (i = 0; i < ntx; ++i) {
2396                 struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[i];
2397
2398                 for (j = 0; j < BWI_TX_NDESC; ++j) {
2399                         struct bwi_txbuf *tb = &tbd->tbd_buf[j];
2400
2401                         if (tb->tb_mbuf != NULL) {
2402                                 bus_dmamap_unload(sc->sc_buf_dtag,
2403                                                   tb->tb_dmap);
2404                                 m_freem(tb->tb_mbuf);
2405                         }
2406                         if (tb->tb_ni != NULL)
2407                                 ieee80211_free_node(tb->tb_ni);
2408                         bus_dmamap_destroy(sc->sc_buf_dtag, tb->tb_dmap);
2409                 }
2410         }
2411
2412         if (nrx) {
2413                 struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2414
2415                 bus_dmamap_destroy(sc->sc_buf_dtag, rbd->rbd_tmp_dmap);
2416                 for (j = 0; j < BWI_RX_NDESC; ++j) {
2417                         struct bwi_rxbuf *rb = &rbd->rbd_buf[j];
2418
2419                         if (rb->rb_mbuf != NULL) {
2420                                 bus_dmamap_unload(sc->sc_buf_dtag,
2421                                                   rb->rb_dmap);
2422                                 m_freem(rb->rb_mbuf);
2423                         }
2424                         bus_dmamap_destroy(sc->sc_buf_dtag, rb->rb_dmap);
2425                 }
2426         }
2427
2428         bus_dma_tag_destroy(sc->sc_buf_dtag);
2429         sc->sc_buf_dtag = NULL;
2430 }
2431
2432 static void
2433 bwi_enable_intrs(struct bwi_softc *sc, uint32_t enable_intrs)
2434 {
2435         CSR_SETBITS_4(sc, BWI_MAC_INTR_MASK, enable_intrs);
2436 }
2437
2438 static void
2439 bwi_disable_intrs(struct bwi_softc *sc, uint32_t disable_intrs)
2440 {
2441         CSR_CLRBITS_4(sc, BWI_MAC_INTR_MASK, disable_intrs);
2442 }
2443
2444 static int
2445 bwi_init_tx_ring32(struct bwi_softc *sc, int ring_idx)
2446 {
2447         struct bwi_ring_data *rd;
2448         struct bwi_txbuf_data *tbd;
2449         uint32_t val, addr_hi, addr_lo;
2450
2451         KKASSERT(ring_idx < BWI_TX_NRING);
2452         rd = &sc->sc_tx_rdata[ring_idx];
2453         tbd = &sc->sc_tx_bdata[ring_idx];
2454
2455         tbd->tbd_idx = 0;
2456         tbd->tbd_used = 0;
2457
2458         bzero(rd->rdata_desc, sizeof(struct bwi_desc32) * BWI_TX_NDESC);
2459         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
2460                         BUS_DMASYNC_PREWRITE);
2461
2462         addr_lo = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2463         addr_hi = __SHIFTOUT(rd->rdata_paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2464
2465         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2466               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2467                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2468         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, val);
2469
2470         val = __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2471               BWI_TXRX32_CTRL_ENABLE;
2472         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, val);
2473
2474         return 0;
2475 }
2476
2477 static void
2478 bwi_init_rxdesc_ring32(struct bwi_softc *sc, uint32_t ctrl_base,
2479                        bus_addr_t paddr, int hdr_size, int ndesc)
2480 {
2481         uint32_t val, addr_hi, addr_lo;
2482
2483         addr_lo = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_ADDR_MASK);
2484         addr_hi = __SHIFTOUT(paddr, BWI_TXRX32_RINGINFO_FUNC_MASK);
2485
2486         val = __SHIFTIN(addr_lo, BWI_TXRX32_RINGINFO_ADDR_MASK) |
2487               __SHIFTIN(BWI_TXRX32_RINGINFO_FUNC_TXRX,
2488                         BWI_TXRX32_RINGINFO_FUNC_MASK);
2489         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_RINGINFO, val);
2490
2491         val = __SHIFTIN(hdr_size, BWI_RX32_CTRL_HDRSZ_MASK) |
2492               __SHIFTIN(addr_hi, BWI_TXRX32_CTRL_ADDRHI_MASK) |
2493               BWI_TXRX32_CTRL_ENABLE;
2494         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_CTRL, val);
2495
2496         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
2497                     (ndesc - 1) * sizeof(struct bwi_desc32));
2498 }
2499
2500 static int
2501 bwi_init_rx_ring32(struct bwi_softc *sc)
2502 {
2503         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2504         int i, error;
2505
2506         sc->sc_rx_bdata.rbd_idx = 0;
2507
2508         for (i = 0; i < BWI_RX_NDESC; ++i) {
2509                 error = bwi_newbuf(sc, i, 1);
2510                 if (error) {
2511                         if_printf(&sc->sc_ic.ic_if,
2512                                   "can't allocate %dth RX buffer\n", i);
2513                         return error;
2514                 }
2515         }
2516         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2517                         BUS_DMASYNC_PREWRITE);
2518
2519         bwi_init_rxdesc_ring32(sc, rd->rdata_txrx_ctrl, rd->rdata_paddr,
2520                                sizeof(struct bwi_rxbuf_hdr), BWI_RX_NDESC);
2521         return 0;
2522 }
2523
2524 static int
2525 bwi_init_txstats32(struct bwi_softc *sc)
2526 {
2527         struct bwi_txstats_data *st = sc->sc_txstats;
2528         bus_addr_t stats_paddr;
2529         int i;
2530
2531         bzero(st->stats, BWI_TXSTATS_NDESC * sizeof(struct bwi_txstats));
2532         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_PREWRITE);
2533
2534         st->stats_idx = 0;
2535
2536         stats_paddr = st->stats_paddr;
2537         for (i = 0; i < BWI_TXSTATS_NDESC; ++i) {
2538                 bwi_setup_desc32(sc, st->stats_ring, BWI_TXSTATS_NDESC, i,
2539                                  stats_paddr, sizeof(struct bwi_txstats), 0);
2540                 stats_paddr += sizeof(struct bwi_txstats);
2541         }
2542         bus_dmamap_sync(st->stats_ring_dtag, st->stats_ring_dmap,
2543                         BUS_DMASYNC_PREWRITE);
2544
2545         bwi_init_rxdesc_ring32(sc, st->stats_ctrl_base,
2546                                st->stats_ring_paddr, 0, BWI_TXSTATS_NDESC);
2547         return 0;
2548 }
2549
2550 static void
2551 bwi_setup_rx_desc32(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2552                     int buf_len)
2553 {
2554         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2555
2556         KKASSERT(buf_idx < BWI_RX_NDESC);
2557         bwi_setup_desc32(sc, rd->rdata_desc, BWI_RX_NDESC, buf_idx,
2558                          paddr, buf_len, 0);
2559 }
2560
2561 static void
2562 bwi_setup_tx_desc32(struct bwi_softc *sc, struct bwi_ring_data *rd,
2563                     int buf_idx, bus_addr_t paddr, int buf_len)
2564 {
2565         KKASSERT(buf_idx < BWI_TX_NDESC);
2566         bwi_setup_desc32(sc, rd->rdata_desc, BWI_TX_NDESC, buf_idx,
2567                          paddr, buf_len, 1);
2568 }
2569
2570 static int
2571 bwi_init_tx_ring64(struct bwi_softc *sc, int ring_idx)
2572 {
2573         /* TODO:64 */
2574         return EOPNOTSUPP;
2575 }
2576
2577 static int
2578 bwi_init_rx_ring64(struct bwi_softc *sc)
2579 {
2580         /* TODO:64 */
2581         return EOPNOTSUPP;
2582 }
2583
2584 static int
2585 bwi_init_txstats64(struct bwi_softc *sc)
2586 {
2587         /* TODO:64 */
2588         return EOPNOTSUPP;
2589 }
2590
2591 static void
2592 bwi_setup_rx_desc64(struct bwi_softc *sc, int buf_idx, bus_addr_t paddr,
2593                     int buf_len)
2594 {
2595         /* TODO:64 */
2596 }
2597
2598 static void
2599 bwi_setup_tx_desc64(struct bwi_softc *sc, struct bwi_ring_data *rd,
2600                     int buf_idx, bus_addr_t paddr, int buf_len)
2601 {
2602         /* TODO:64 */
2603 }
2604
2605 static void
2606 bwi_dma_buf_addr(void *arg, bus_dma_segment_t *seg, int nseg,
2607                  bus_size_t mapsz __unused, int error)
2608 {
2609         if (!error) {
2610                 KASSERT(nseg == 1, ("too many segments(%d)", nseg));
2611                 *((bus_addr_t *)arg) = seg->ds_addr;
2612         }
2613 }
2614
2615 static int
2616 bwi_newbuf(struct bwi_softc *sc, int buf_idx, int init)
2617 {
2618         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2619         struct bwi_rxbuf *rxbuf = &rbd->rbd_buf[buf_idx];
2620         struct bwi_rxbuf_hdr *hdr;
2621         bus_dmamap_t map;
2622         bus_addr_t paddr;
2623         struct mbuf *m;
2624         int error;
2625
2626         KKASSERT(buf_idx < BWI_RX_NDESC);
2627
2628         m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2629         if (m == NULL) {
2630                 error = ENOBUFS;
2631
2632                 /*
2633                  * If the NIC is up and running, we need to:
2634                  * - Clear RX buffer's header.
2635                  * - Restore RX descriptor settings.
2636                  */
2637                 if (init)
2638                         return error;
2639                 else
2640                         goto back;
2641         }
2642         m->m_len = m->m_pkthdr.len = MCLBYTES;
2643
2644         /*
2645          * Try to load RX buf into temporary DMA map
2646          */
2647         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, rbd->rbd_tmp_dmap, m,
2648                                      bwi_dma_buf_addr, &paddr,
2649                                      init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT);
2650         if (error) {
2651                 m_freem(m);
2652
2653                 /*
2654                  * See the comment above
2655                  */
2656                 if (init)
2657                         return error;
2658                 else
2659                         goto back;
2660         }
2661
2662         if (!init)
2663                 bus_dmamap_unload(sc->sc_buf_dtag, rxbuf->rb_dmap);
2664         rxbuf->rb_mbuf = m;
2665         rxbuf->rb_paddr = paddr;
2666
2667         /*
2668          * Swap RX buf's DMA map with the loaded temporary one
2669          */
2670         map = rxbuf->rb_dmap;
2671         rxbuf->rb_dmap = rbd->rbd_tmp_dmap;
2672         rbd->rbd_tmp_dmap = map;
2673
2674 back:
2675         /*
2676          * Clear RX buf header
2677          */
2678         hdr = mtod(rxbuf->rb_mbuf, struct bwi_rxbuf_hdr *);
2679         bzero(hdr, sizeof(*hdr));
2680         bus_dmamap_sync(sc->sc_buf_dtag, rxbuf->rb_dmap, BUS_DMASYNC_PREWRITE);
2681
2682         /*
2683          * Setup RX buf descriptor
2684          */
2685         sc->sc_setup_rxdesc(sc, buf_idx, rxbuf->rb_paddr,
2686                             rxbuf->rb_mbuf->m_len - sizeof(*hdr));
2687         return error;
2688 }
2689
2690 static void
2691 bwi_set_addr_filter(struct bwi_softc *sc, uint16_t addr_ofs,
2692                     const uint8_t *addr)
2693 {
2694         int i;
2695
2696         CSR_WRITE_2(sc, BWI_ADDR_FILTER_CTRL,
2697                     BWI_ADDR_FILTER_CTRL_SET | addr_ofs);
2698
2699         for (i = 0; i < (IEEE80211_ADDR_LEN / 2); ++i) {
2700                 uint16_t addr_val;
2701
2702                 addr_val = (uint16_t)addr[i * 2] |
2703                            (((uint16_t)addr[(i * 2) + 1]) << 8);
2704                 CSR_WRITE_2(sc, BWI_ADDR_FILTER_DATA, addr_val);
2705         }
2706 }
2707
2708 static int
2709 bwi_set_chan(struct bwi_softc *sc, struct ieee80211_channel *c)
2710 {
2711         struct ieee80211com *ic = &sc->sc_ic;
2712 #ifdef INVARIANTS
2713         struct ifnet *ifp = &ic->ic_if;
2714 #endif
2715         struct bwi_mac *mac;
2716         uint16_t flags;
2717         u_int chan;
2718
2719         ASSERT_SERIALIZED(ifp->if_serializer);
2720
2721         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
2722         mac = (struct bwi_mac *)sc->sc_cur_regwin;
2723
2724         chan = ieee80211_chan2ieee(ic, c);
2725
2726         bwi_rf_set_chan(mac, chan, 0);
2727
2728         /*
2729          * Setup radio tap channel freq and flags
2730          */
2731         if (IEEE80211_IS_CHAN_G(c))
2732                 flags = IEEE80211_CHAN_G;
2733         else
2734                 flags = IEEE80211_CHAN_B;
2735
2736         sc->sc_tx_th.wt_chan_freq = sc->sc_rx_th.wr_chan_freq =
2737                 htole16(c->ic_freq);
2738         sc->sc_tx_th.wt_chan_flags = sc->sc_rx_th.wr_chan_flags =
2739                 htole16(flags);
2740
2741         return 0;
2742 }
2743
2744 static void
2745 bwi_next_scan(void *xsc)
2746 {
2747         struct bwi_softc *sc = xsc;
2748         struct ieee80211com *ic = &sc->sc_ic;
2749         struct ifnet *ifp = &ic->ic_if;
2750
2751         lwkt_serialize_enter(ifp->if_serializer);
2752
2753         if (ic->ic_state == IEEE80211_S_SCAN)
2754                 ieee80211_next_scan(ic);
2755
2756         lwkt_serialize_exit(ifp->if_serializer);
2757 }
2758
2759 static int
2760 bwi_rxeof(struct bwi_softc *sc, int end_idx)
2761 {
2762         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2763         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2764         struct ieee80211com *ic = &sc->sc_ic;
2765         struct ifnet *ifp = &ic->ic_if;
2766         int idx, rx_data = 0;
2767
2768         idx = rbd->rbd_idx;
2769         while (idx != end_idx) {
2770                 struct bwi_rxbuf *rb = &rbd->rbd_buf[idx];
2771                 struct bwi_rxbuf_hdr *hdr;
2772                 struct ieee80211_frame_min *wh;
2773                 struct ieee80211_node *ni;
2774                 struct mbuf *m;
2775                 const void *plcp;
2776                 uint16_t flags2;
2777                 int buflen, wh_ofs, hdr_extra, rssi, type, rate;
2778
2779                 m = rb->rb_mbuf;
2780                 bus_dmamap_sync(sc->sc_buf_dtag, rb->rb_dmap,
2781                                 BUS_DMASYNC_POSTREAD);
2782
2783                 if (bwi_newbuf(sc, idx, 0)) {
2784                         IFNET_STAT_INC(ifp, ierrors, 1);
2785                         goto next;
2786                 }
2787
2788                 hdr = mtod(m, struct bwi_rxbuf_hdr *);
2789                 flags2 = le16toh(hdr->rxh_flags2);
2790
2791                 hdr_extra = 0;
2792                 if (flags2 & BWI_RXH_F2_TYPE2FRAME)
2793                         hdr_extra = 2;
2794                 wh_ofs = hdr_extra + 6; /* XXX magic number */
2795
2796                 buflen = le16toh(hdr->rxh_buflen);
2797                 if (buflen < BWI_FRAME_MIN_LEN(wh_ofs)) {
2798                         if_printf(ifp, "short frame %d, hdr_extra %d\n",
2799                                   buflen, hdr_extra);
2800                         IFNET_STAT_INC(ifp, ierrors, 1);
2801                         m_freem(m);
2802                         goto next;
2803                 }
2804
2805                 plcp = ((const uint8_t *)(hdr + 1) + hdr_extra);
2806                 rssi = bwi_calc_rssi(sc, hdr);
2807
2808                 m->m_pkthdr.rcvif = ifp;
2809                 m->m_len = m->m_pkthdr.len = buflen + sizeof(*hdr);
2810                 m_adj(m, sizeof(*hdr) + wh_ofs);
2811
2812                 if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_OFDM)
2813                         rate = bwi_ofdm_plcp2rate(plcp);
2814                 else
2815                         rate = bwi_ds_plcp2rate(plcp);
2816
2817                 /* RX radio tap */
2818                 if (sc->sc_drvbpf != NULL)
2819                         bwi_rx_radiotap(sc, m, hdr, plcp, rate, rssi);
2820
2821                 m_adj(m, -IEEE80211_CRC_LEN);
2822
2823                 wh = mtod(m, struct ieee80211_frame_min *);
2824                 ni = ieee80211_find_rxnode(ic, wh);
2825
2826                 type = ieee80211_input(ic, m, ni, rssi - BWI_NOISE_FLOOR,
2827                                        le16toh(hdr->rxh_tsf));
2828                 ieee80211_free_node(ni);
2829
2830                 if (type == IEEE80211_FC0_TYPE_DATA) {
2831                         rx_data = 1;
2832                         sc->sc_rx_rate = rate;
2833                 }
2834 next:
2835                 idx = (idx + 1) % BWI_RX_NDESC;
2836         }
2837
2838         rbd->rbd_idx = idx;
2839         bus_dmamap_sync(sc->sc_rxring_dtag, rd->rdata_dmap,
2840                         BUS_DMASYNC_PREWRITE);
2841         return rx_data;
2842 }
2843
2844 static int
2845 bwi_rxeof32(struct bwi_softc *sc)
2846 {
2847         uint32_t val, rx_ctrl;
2848         int end_idx, rx_data;
2849
2850         rx_ctrl = sc->sc_rx_rdata.rdata_txrx_ctrl;
2851
2852         val = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2853         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
2854                   sizeof(struct bwi_desc32);
2855
2856         rx_data = bwi_rxeof(sc, end_idx);
2857
2858         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_INDEX,
2859                     end_idx * sizeof(struct bwi_desc32));
2860
2861         return rx_data;
2862 }
2863
2864 static int
2865 bwi_rxeof64(struct bwi_softc *sc)
2866 {
2867         /* TODO:64 */
2868         return 0;
2869 }
2870
2871 static void
2872 bwi_reset_rx_ring32(struct bwi_softc *sc, uint32_t rx_ctrl)
2873 {
2874         int i;
2875
2876         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_CTRL, 0);
2877
2878 #define NRETRY 10
2879
2880         for (i = 0; i < NRETRY; ++i) {
2881                 uint32_t status;
2882
2883                 status = CSR_READ_4(sc, rx_ctrl + BWI_RX32_STATUS);
2884                 if (__SHIFTOUT(status, BWI_RX32_STATUS_STATE_MASK) ==
2885                     BWI_RX32_STATUS_STATE_DISABLED)
2886                         break;
2887
2888                 DELAY(1000);
2889         }
2890         if (i == NRETRY)
2891                 if_printf(&sc->sc_ic.ic_if, "reset rx ring timedout\n");
2892
2893 #undef NRETRY
2894
2895         CSR_WRITE_4(sc, rx_ctrl + BWI_RX32_RINGINFO, 0);
2896 }
2897
2898 static void
2899 bwi_free_txstats32(struct bwi_softc *sc)
2900 {
2901         bwi_reset_rx_ring32(sc, sc->sc_txstats->stats_ctrl_base);
2902 }
2903
2904 static void
2905 bwi_free_rx_ring32(struct bwi_softc *sc)
2906 {
2907         struct bwi_ring_data *rd = &sc->sc_rx_rdata;
2908         struct bwi_rxbuf_data *rbd = &sc->sc_rx_bdata;
2909         int i;
2910
2911         bwi_reset_rx_ring32(sc, rd->rdata_txrx_ctrl);
2912
2913         for (i = 0; i < BWI_RX_NDESC; ++i) {
2914                 struct bwi_rxbuf *rb = &rbd->rbd_buf[i];
2915
2916                 if (rb->rb_mbuf != NULL) {
2917                         bus_dmamap_unload(sc->sc_buf_dtag, rb->rb_dmap);
2918                         m_freem(rb->rb_mbuf);
2919                         rb->rb_mbuf = NULL;
2920                 }
2921         }
2922 }
2923
2924 static void
2925 bwi_free_tx_ring32(struct bwi_softc *sc, int ring_idx)
2926 {
2927         struct bwi_ring_data *rd;
2928         struct bwi_txbuf_data *tbd;
2929         struct ifnet *ifp = &sc->sc_ic.ic_if;
2930         uint32_t state, val;
2931         int i;
2932
2933         KKASSERT(ring_idx < BWI_TX_NRING);
2934         rd = &sc->sc_tx_rdata[ring_idx];
2935         tbd = &sc->sc_tx_bdata[ring_idx];
2936
2937 #define NRETRY 10
2938
2939         for (i = 0; i < NRETRY; ++i) {
2940                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2941                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2942                 if (state == BWI_TX32_STATUS_STATE_DISABLED ||
2943                     state == BWI_TX32_STATUS_STATE_IDLE ||
2944                     state == BWI_TX32_STATUS_STATE_STOPPED)
2945                         break;
2946
2947                 DELAY(1000);
2948         }
2949         if (i == NRETRY) {
2950                 if_printf(ifp, "wait for TX ring(%d) stable timed out\n",
2951                           ring_idx);
2952         }
2953
2954         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_CTRL, 0);
2955         for (i = 0; i < NRETRY; ++i) {
2956                 val = CSR_READ_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_STATUS);
2957                 state = __SHIFTOUT(val, BWI_TX32_STATUS_STATE_MASK);
2958                 if (state == BWI_TX32_STATUS_STATE_DISABLED)
2959                         break;
2960
2961                 DELAY(1000);
2962         }
2963         if (i == NRETRY)
2964                 if_printf(ifp, "reset TX ring (%d) timed out\n", ring_idx);
2965
2966 #undef NRETRY
2967
2968         DELAY(1000);
2969
2970         CSR_WRITE_4(sc, rd->rdata_txrx_ctrl + BWI_TX32_RINGINFO, 0);
2971
2972         for (i = 0; i < BWI_TX_NDESC; ++i) {
2973                 struct bwi_txbuf *tb = &tbd->tbd_buf[i];
2974
2975                 if (tb->tb_mbuf != NULL) {
2976                         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
2977                         m_freem(tb->tb_mbuf);
2978                         tb->tb_mbuf = NULL;
2979                 }
2980                 if (tb->tb_ni != NULL) {
2981                         ieee80211_free_node(tb->tb_ni);
2982                         tb->tb_ni = NULL;
2983                 }
2984         }
2985 }
2986
2987 static void
2988 bwi_free_txstats64(struct bwi_softc *sc)
2989 {
2990         /* TODO:64 */
2991 }
2992
2993 static void
2994 bwi_free_rx_ring64(struct bwi_softc *sc)
2995 {
2996         /* TODO:64 */
2997 }
2998
2999 static void
3000 bwi_free_tx_ring64(struct bwi_softc *sc, int ring_idx)
3001 {
3002         /* TODO:64 */
3003 }
3004
3005 static int
3006 bwi_encap(struct bwi_softc *sc, int idx, struct mbuf *m,
3007           struct ieee80211_node **ni0, int mgt_pkt)
3008 {
3009         struct ieee80211com *ic = &sc->sc_ic;
3010         struct ieee80211_node *ni = *ni0;
3011         struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
3012         struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
3013         struct bwi_txbuf *tb = &tbd->tbd_buf[idx];
3014         struct bwi_mac *mac;
3015         struct bwi_txbuf_hdr *hdr;
3016         struct ieee80211_frame *wh;
3017         uint8_t rate, rate_fb;
3018         uint32_t mac_ctrl;
3019         uint16_t phy_ctrl;
3020         bus_addr_t paddr;
3021         int pkt_len, error, mcast_pkt = 0;
3022 #if 0
3023         const uint8_t *p;
3024         int i;
3025 #endif
3026
3027         KKASSERT(ni != NULL);
3028         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3029         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3030
3031         wh = mtod(m, struct ieee80211_frame *);
3032
3033         /* Get 802.11 frame len before prepending TX header */
3034         pkt_len = m->m_pkthdr.len + IEEE80211_CRC_LEN;
3035
3036         /*
3037          * Find TX rate
3038          */
3039         bzero(tb->tb_rateidx, sizeof(tb->tb_rateidx));
3040         if (!mgt_pkt) {
3041                 if (ic->ic_fixed_rate != IEEE80211_FIXED_RATE_NONE) {
3042                         int idx;
3043
3044                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3045                                         ic->ic_fixed_rate);
3046
3047                         if (ic->ic_fixed_rate >= 1)
3048                                 idx = ic->ic_fixed_rate - 1;
3049                         else
3050                                 idx = 0;
3051                         rate_fb = IEEE80211_RS_RATE(&ni->ni_rates, idx);
3052                 } else {
3053                         tb->tb_rateidx_cnt = ieee80211_ratectl_findrate(ni,
3054                                 m->m_pkthdr.len, tb->tb_rateidx, BWI_NTXRATE);
3055
3056                         rate = IEEE80211_RS_RATE(&ni->ni_rates,
3057                                                  tb->tb_rateidx[0]);
3058                         if (tb->tb_rateidx_cnt == BWI_NTXRATE) {
3059                                 rate_fb = IEEE80211_RS_RATE(&ni->ni_rates,
3060                                                             tb->tb_rateidx[1]);
3061                         } else {
3062                                 rate_fb = rate;
3063                         }
3064                         tb->tb_buflen = m->m_pkthdr.len;
3065                 }
3066         } else {
3067                 /* Fixed at 1Mbits/s for mgt frames */
3068                 rate = rate_fb = (1 * 2);
3069         }
3070
3071         if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
3072                 rate = rate_fb = ic->ic_mcast_rate;
3073                 mcast_pkt = 1;
3074         }
3075
3076         if (rate == 0 || rate_fb == 0) {
3077                 /* XXX this should not happen */
3078                 if_printf(&ic->ic_if, "invalid rate %u or fallback rate %u",
3079                           rate, rate_fb);
3080                 rate = rate_fb = (1 * 2); /* Force 1Mbits/s */
3081         }
3082         sc->sc_tx_rate = rate;
3083
3084         /*
3085          * TX radio tap
3086          */
3087         if (sc->sc_drvbpf != NULL) {
3088                 sc->sc_tx_th.wt_flags = 0;
3089                 if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3090                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3091                 if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_DS &&
3092                     (ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3093                     rate != (1 * 2)) {
3094                         sc->sc_tx_th.wt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3095                 }
3096                 sc->sc_tx_th.wt_rate = rate;
3097
3098                 bpf_ptap(sc->sc_drvbpf, m, &sc->sc_tx_th, sc->sc_tx_th_len);
3099         }
3100
3101         /*
3102          * Setup the embedded TX header
3103          */
3104         M_PREPEND(m, sizeof(*hdr), MB_DONTWAIT);
3105         if (m == NULL) {
3106                 if_printf(&ic->ic_if, "prepend TX header failed\n");
3107                 return ENOBUFS;
3108         }
3109         hdr = mtod(m, struct bwi_txbuf_hdr *);
3110
3111         bzero(hdr, sizeof(*hdr));
3112
3113         bcopy(wh->i_fc, hdr->txh_fc, sizeof(hdr->txh_fc));
3114         bcopy(wh->i_addr1, hdr->txh_addr1, sizeof(hdr->txh_addr1));
3115
3116         if (!mcast_pkt) {
3117                 uint16_t dur;
3118                 uint8_t ack_rate;
3119
3120                 ack_rate = ieee80211_ack_rate(ni, rate_fb);
3121                 dur = ieee80211_txtime(ni,
3122                 sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN,
3123                 ack_rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE);
3124
3125                 hdr->txh_fb_duration = htole16(dur);
3126         }
3127
3128         hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
3129                       __SHIFTIN(idx, BWI_TXH_ID_IDX_MASK);
3130
3131         bwi_plcp_header(hdr->txh_plcp, pkt_len, rate);
3132         bwi_plcp_header(hdr->txh_fb_plcp, pkt_len, rate_fb);
3133
3134         phy_ctrl = __SHIFTIN(mac->mac_rf.rf_ant_mode,
3135                              BWI_TXH_PHY_C_ANTMODE_MASK);
3136         if (ieee80211_rate2modtype(rate) == IEEE80211_MODTYPE_OFDM)
3137                 phy_ctrl |= BWI_TXH_PHY_C_OFDM;
3138         else if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && rate != (2 * 1))
3139                 phy_ctrl |= BWI_TXH_PHY_C_SHPREAMBLE;
3140
3141         mac_ctrl = BWI_TXH_MAC_C_HWSEQ | BWI_TXH_MAC_C_FIRST_FRAG;
3142         if (!IEEE80211_IS_MULTICAST(wh->i_addr1))
3143                 mac_ctrl |= BWI_TXH_MAC_C_ACK;
3144         if (ieee80211_rate2modtype(rate_fb) == IEEE80211_MODTYPE_OFDM)
3145                 mac_ctrl |= BWI_TXH_MAC_C_FB_OFDM;
3146
3147         hdr->txh_mac_ctrl = htole32(mac_ctrl);
3148         hdr->txh_phy_ctrl = htole16(phy_ctrl);
3149
3150         /* Catch any further usage */
3151         hdr = NULL;
3152         wh = NULL;
3153
3154         /* DMA load */
3155         error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3156                                      bwi_dma_buf_addr, &paddr, BUS_DMA_NOWAIT);
3157         if (error && error != EFBIG) {
3158                 if_printf(&ic->ic_if, "can't load TX buffer (1) %d\n", error);
3159                 goto back;
3160         }
3161
3162         if (error) {    /* error == EFBIG */
3163                 struct mbuf *m_new;
3164
3165                 m_new = m_defrag(m, MB_DONTWAIT);
3166                 if (m_new == NULL) {
3167                         if_printf(&ic->ic_if, "can't defrag TX buffer\n");
3168                         error = ENOBUFS;
3169                         goto back;
3170                 } else {
3171                         m = m_new;
3172                 }
3173
3174                 error = bus_dmamap_load_mbuf(sc->sc_buf_dtag, tb->tb_dmap, m,
3175                                              bwi_dma_buf_addr, &paddr,
3176                                              BUS_DMA_NOWAIT);
3177                 if (error) {
3178                         if_printf(&ic->ic_if, "can't load TX buffer (2) %d\n",
3179                                   error);
3180                         goto back;
3181                 }
3182         }
3183         error = 0;
3184
3185         bus_dmamap_sync(sc->sc_buf_dtag, tb->tb_dmap, BUS_DMASYNC_PREWRITE);
3186
3187         if (mgt_pkt || mcast_pkt) {
3188                 /* Don't involve mcast/mgt packets into TX rate control */
3189                 ieee80211_free_node(ni);
3190                 *ni0 = ni = NULL;
3191         }
3192         tb->tb_mbuf = m;
3193         tb->tb_ni = ni;
3194
3195 #if 0
3196         p = mtod(m, const uint8_t *);
3197         for (i = 0; i < m->m_pkthdr.len; ++i) {
3198                 if (i != 0 && i % 8 == 0)
3199                         kprintf("\n");
3200                 kprintf("%02x ", p[i]);
3201         }
3202         kprintf("\n");
3203 #endif
3204
3205         DPRINTF(sc, BWI_DBG_TX, "idx %d, pkt_len %d, buflen %d\n",
3206                 idx, pkt_len, m->m_pkthdr.len);
3207
3208         /* Setup TX descriptor */
3209         sc->sc_setup_txdesc(sc, rd, idx, paddr, m->m_pkthdr.len);
3210         bus_dmamap_sync(sc->sc_txring_dtag, rd->rdata_dmap,
3211                         BUS_DMASYNC_PREWRITE);
3212
3213         /* Kick start */
3214         sc->sc_start_tx(sc, rd->rdata_txrx_ctrl, idx);
3215
3216 back:
3217         if (error)
3218                 m_freem(m);
3219         return error;
3220 }
3221
3222 static void
3223 bwi_start_tx32(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3224 {
3225         idx = (idx + 1) % BWI_TX_NDESC;
3226         CSR_WRITE_4(sc, tx_ctrl + BWI_TX32_INDEX,
3227                     idx * sizeof(struct bwi_desc32));
3228 }
3229
3230 static void
3231 bwi_start_tx64(struct bwi_softc *sc, uint32_t tx_ctrl, int idx)
3232 {
3233         /* TODO:64 */
3234 }
3235
3236 static void
3237 bwi_txeof_status32(struct bwi_softc *sc)
3238 {
3239         struct ifnet *ifp = &sc->sc_ic.ic_if;
3240         uint32_t val, ctrl_base;
3241         int end_idx;
3242
3243         ctrl_base = sc->sc_txstats->stats_ctrl_base;
3244
3245         val = CSR_READ_4(sc, ctrl_base + BWI_RX32_STATUS);
3246         end_idx = __SHIFTOUT(val, BWI_RX32_STATUS_INDEX_MASK) /
3247                   sizeof(struct bwi_desc32);
3248
3249         bwi_txeof_status(sc, end_idx);
3250
3251         CSR_WRITE_4(sc, ctrl_base + BWI_RX32_INDEX,
3252                     end_idx * sizeof(struct bwi_desc32));
3253
3254         if (!ifq_is_oactive(&ifp->if_snd))
3255                 ifp->if_start(ifp);
3256 }
3257
3258 static void
3259 bwi_txeof_status64(struct bwi_softc *sc)
3260 {
3261         /* TODO:64 */
3262 }
3263
3264 static void
3265 _bwi_txeof(struct bwi_softc *sc, uint16_t tx_id, int acked, int data_txcnt)
3266 {
3267         struct ifnet *ifp = &sc->sc_ic.ic_if;
3268         struct bwi_txbuf_data *tbd;
3269         struct bwi_txbuf *tb;
3270         int ring_idx, buf_idx;
3271
3272         if (tx_id == 0) {
3273                 if_printf(ifp, "zero tx id\n");
3274                 return;
3275         }
3276
3277         ring_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_RING_MASK);
3278         buf_idx = __SHIFTOUT(tx_id, BWI_TXH_ID_IDX_MASK);
3279
3280         KKASSERT(ring_idx == BWI_TX_DATA_RING);
3281         KKASSERT(buf_idx < BWI_TX_NDESC);
3282
3283         tbd = &sc->sc_tx_bdata[ring_idx];
3284         KKASSERT(tbd->tbd_used > 0);
3285         tbd->tbd_used--;
3286
3287         tb = &tbd->tbd_buf[buf_idx];
3288
3289         DPRINTF(sc, BWI_DBG_TXEOF, "txeof idx %d, "
3290                 "acked %d, data_txcnt %d, ni %p\n",
3291                 buf_idx, acked, data_txcnt, tb->tb_ni);
3292
3293         bus_dmamap_unload(sc->sc_buf_dtag, tb->tb_dmap);
3294         m_freem(tb->tb_mbuf);
3295         tb->tb_mbuf = NULL;
3296
3297         if (tb->tb_ni != NULL) {
3298                 struct ieee80211_ratectl_res res[BWI_NTXRATE];
3299                 int res_len, retry;
3300
3301                 if (data_txcnt <= BWI_SHRETRY_FB || tb->tb_rateidx_cnt == 1) {
3302                         res_len = 1;
3303                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3304                         res[0].rc_res_tries = data_txcnt;
3305                 } else {
3306                         res_len = BWI_NTXRATE;
3307                         res[0].rc_res_rateidx = tb->tb_rateidx[0];
3308                         res[0].rc_res_tries = BWI_SHRETRY_FB;
3309                         res[1].rc_res_rateidx = tb->tb_rateidx[1];
3310                         res[1].rc_res_tries = data_txcnt - BWI_SHRETRY_FB;
3311                 }
3312
3313                 if (acked) {
3314                         IFNET_STAT_INC(ifp, opackets, 1);
3315                         retry = data_txcnt > 0 ? data_txcnt - 1 : 0;
3316                 } else {
3317                         IFNET_STAT_INC(ifp, oerrors, 1);
3318                         retry = data_txcnt;
3319                 }
3320
3321                 ieee80211_ratectl_tx_complete(tb->tb_ni, tb->tb_buflen,
3322                         res, res_len, retry, 0, !acked);
3323
3324                 ieee80211_free_node(tb->tb_ni);
3325                 tb->tb_ni = NULL;
3326         } else {
3327                 /* XXX mgt packet error */
3328                 IFNET_STAT_INC(ifp, opackets, 1);
3329         }
3330
3331         if (tbd->tbd_used == 0)
3332                 sc->sc_tx_timer = 0;
3333
3334         ifq_clr_oactive(&ifp->if_snd);
3335 }
3336
3337 static void
3338 bwi_txeof_status(struct bwi_softc *sc, int end_idx)
3339 {
3340         struct bwi_txstats_data *st = sc->sc_txstats;
3341         int idx;
3342
3343         bus_dmamap_sync(st->stats_dtag, st->stats_dmap, BUS_DMASYNC_POSTREAD);
3344
3345         idx = st->stats_idx;
3346         while (idx != end_idx) {
3347                 const struct bwi_txstats *stats = &st->stats[idx];
3348
3349                 if ((stats->txs_flags & BWI_TXS_F_PENDING) == 0) {
3350                         int data_txcnt;
3351
3352                         data_txcnt = __SHIFTOUT(stats->txs_txcnt,
3353                                                 BWI_TXS_TXCNT_DATA);
3354                         _bwi_txeof(sc, le16toh(stats->txs_id),
3355                                    stats->txs_flags & BWI_TXS_F_ACKED,
3356                                    data_txcnt);
3357                 }
3358                 idx = (idx + 1) % BWI_TXSTATS_NDESC;
3359         }
3360         st->stats_idx = idx;
3361 }
3362
3363 static void
3364 bwi_txeof(struct bwi_softc *sc)
3365 {
3366         struct ifnet *ifp = &sc->sc_ic.ic_if;
3367
3368         for (;;) {
3369                 uint32_t tx_status0, tx_status1;
3370                 uint16_t tx_id;
3371                 int data_txcnt;
3372
3373                 tx_status0 = CSR_READ_4(sc, BWI_TXSTATUS0);
3374                 if ((tx_status0 & BWI_TXSTATUS0_VALID) == 0)
3375                         break;
3376                 tx_status1 = CSR_READ_4(sc, BWI_TXSTATUS1);
3377
3378                 tx_id = __SHIFTOUT(tx_status0, BWI_TXSTATUS0_TXID_MASK);
3379                 data_txcnt = __SHIFTOUT(tx_status0,
3380                                 BWI_TXSTATUS0_DATA_TXCNT_MASK);
3381
3382                 if (tx_status0 & (BWI_TXSTATUS0_AMPDU | BWI_TXSTATUS0_PENDING))
3383                         continue;
3384
3385                 _bwi_txeof(sc, tx_id, tx_status0 & BWI_TXSTATUS0_ACKED,
3386                            data_txcnt);
3387         }
3388
3389         if (!ifq_is_oactive(&ifp->if_snd))
3390                 ifp->if_start(ifp);
3391 }
3392
3393 static int
3394 bwi_bbp_power_on(struct bwi_softc *sc, enum bwi_clock_mode clk_mode)
3395 {
3396         bwi_power_on(sc, 1);
3397         return bwi_set_clock_mode(sc, clk_mode);
3398 }
3399
3400 static void
3401 bwi_bbp_power_off(struct bwi_softc *sc)
3402 {
3403         bwi_set_clock_mode(sc, BWI_CLOCK_MODE_SLOW);
3404         bwi_power_off(sc, 1);
3405 }
3406
3407 static int
3408 bwi_get_pwron_delay(struct bwi_softc *sc)
3409 {
3410         struct bwi_regwin *com, *old;
3411         struct bwi_clock_freq freq;
3412         uint32_t val;
3413         int error;
3414
3415         com = &sc->sc_com_regwin;
3416         KKASSERT(BWI_REGWIN_EXIST(com));
3417
3418         if ((sc->sc_cap & BWI_CAP_CLKMODE) == 0)
3419                 return 0;
3420
3421         error = bwi_regwin_switch(sc, com, &old);
3422         if (error)
3423                 return error;
3424
3425         bwi_get_clock_freq(sc, &freq);
3426
3427         val = CSR_READ_4(sc, BWI_PLL_ON_DELAY);
3428         sc->sc_pwron_delay = howmany((val + 2) * 1000000, freq.clkfreq_min);
3429         DPRINTF(sc, BWI_DBG_ATTACH, "power on delay %u\n", sc->sc_pwron_delay);
3430
3431         return bwi_regwin_switch(sc, old, NULL);
3432 }
3433
3434 static int
3435 bwi_bus_attach(struct bwi_softc *sc)
3436 {
3437         struct bwi_regwin *bus, *old;
3438         int error;
3439
3440         bus = &sc->sc_bus_regwin;
3441
3442         error = bwi_regwin_switch(sc, bus, &old);
3443         if (error)
3444                 return error;
3445
3446         if (!bwi_regwin_is_enabled(sc, bus))
3447                 bwi_regwin_enable(sc, bus, 0);
3448
3449         /* Disable interripts */
3450         CSR_WRITE_4(sc, BWI_INTRVEC, 0);
3451
3452         return bwi_regwin_switch(sc, old, NULL);
3453 }
3454
3455 static const char *
3456 bwi_regwin_name(const struct bwi_regwin *rw)
3457 {
3458         switch (rw->rw_type) {
3459         case BWI_REGWIN_T_COM:
3460                 return "COM";
3461         case BWI_REGWIN_T_BUSPCI:
3462                 return "PCI";
3463         case BWI_REGWIN_T_MAC:
3464                 return "MAC";
3465         case BWI_REGWIN_T_BUSPCIE:
3466                 return "PCIE";
3467         }
3468         panic("unknown regwin type 0x%04x", rw->rw_type);
3469         return NULL;
3470 }
3471
3472 static uint32_t
3473 bwi_regwin_disable_bits(struct bwi_softc *sc)
3474 {
3475         uint32_t busrev;
3476
3477         /* XXX cache this */
3478         busrev = __SHIFTOUT(CSR_READ_4(sc, BWI_ID_LO), BWI_ID_LO_BUSREV_MASK);
3479         DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT | BWI_DBG_MISC,
3480                 "bus rev %u\n", busrev);
3481
3482         if (busrev == BWI_BUSREV_0)
3483                 return BWI_STATE_LO_DISABLE1;
3484         else if (busrev == BWI_BUSREV_1)
3485                 return BWI_STATE_LO_DISABLE2;
3486         else
3487                 return (BWI_STATE_LO_DISABLE1 | BWI_STATE_LO_DISABLE2);
3488 }
3489
3490 int
3491 bwi_regwin_is_enabled(struct bwi_softc *sc, struct bwi_regwin *rw)
3492 {
3493         uint32_t val, disable_bits;
3494
3495         disable_bits = bwi_regwin_disable_bits(sc);
3496         val = CSR_READ_4(sc, BWI_STATE_LO);
3497
3498         if ((val & (BWI_STATE_LO_CLOCK |
3499                     BWI_STATE_LO_RESET |
3500                     disable_bits)) == BWI_STATE_LO_CLOCK) {
3501                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is enabled\n",
3502                         bwi_regwin_name(rw));
3503                 return 1;
3504         } else {
3505                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT, "%s is disabled\n",
3506                         bwi_regwin_name(rw));
3507                 return 0;
3508         }
3509 }
3510
3511 void
3512 bwi_regwin_disable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3513 {
3514         uint32_t state_lo, disable_bits;
3515         int i;
3516
3517         state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3518
3519         /*
3520          * If current regwin is in 'reset' state, it was already disabled.
3521          */
3522         if (state_lo & BWI_STATE_LO_RESET) {
3523                 DPRINTF(sc, BWI_DBG_ATTACH | BWI_DBG_INIT,
3524                         "%s was already disabled\n", bwi_regwin_name(rw));
3525                 return;
3526         }
3527
3528         disable_bits = bwi_regwin_disable_bits(sc);
3529
3530         /*
3531          * Disable normal clock
3532          */
3533         state_lo = BWI_STATE_LO_CLOCK | disable_bits;
3534         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3535
3536         /*
3537          * Wait until normal clock is disabled
3538          */
3539 #define NRETRY  1000
3540         for (i = 0; i < NRETRY; ++i) {
3541                 state_lo = CSR_READ_4(sc, BWI_STATE_LO);
3542                 if (state_lo & disable_bits)
3543                         break;
3544                 DELAY(10);
3545         }
3546         if (i == NRETRY) {
3547                 device_printf(sc->sc_dev, "%s disable clock timeout\n",
3548                               bwi_regwin_name(rw));
3549         }
3550
3551         for (i = 0; i < NRETRY; ++i) {
3552                 uint32_t state_hi;
3553
3554                 state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3555                 if ((state_hi & BWI_STATE_HI_BUSY) == 0)
3556                         break;
3557                 DELAY(10);
3558         }
3559         if (i == NRETRY) {
3560                 device_printf(sc->sc_dev, "%s wait BUSY unset timeout\n",
3561                               bwi_regwin_name(rw));
3562         }
3563 #undef NRETRY
3564
3565         /*
3566          * Reset and disable regwin with gated clock
3567          */
3568         state_lo = BWI_STATE_LO_RESET | disable_bits |
3569                    BWI_STATE_LO_CLOCK | BWI_STATE_LO_GATED_CLOCK |
3570                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3571         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3572
3573         /* Flush pending bus write */
3574         CSR_READ_4(sc, BWI_STATE_LO);
3575         DELAY(1);
3576
3577         /* Reset and disable regwin */
3578         state_lo = BWI_STATE_LO_RESET | disable_bits |
3579                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3580         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3581
3582         /* Flush pending bus write */
3583         CSR_READ_4(sc, BWI_STATE_LO);
3584         DELAY(1);
3585 }
3586
3587 void
3588 bwi_regwin_enable(struct bwi_softc *sc, struct bwi_regwin *rw, uint32_t flags)
3589 {
3590         uint32_t state_lo, state_hi, imstate;
3591
3592         bwi_regwin_disable(sc, rw, flags);
3593
3594         /* Reset regwin with gated clock */
3595         state_lo = BWI_STATE_LO_RESET |
3596                    BWI_STATE_LO_CLOCK |
3597                    BWI_STATE_LO_GATED_CLOCK |
3598                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3599         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3600
3601         /* Flush pending bus write */
3602         CSR_READ_4(sc, BWI_STATE_LO);
3603         DELAY(1);
3604
3605         state_hi = CSR_READ_4(sc, BWI_STATE_HI);
3606         if (state_hi & BWI_STATE_HI_SERROR)
3607                 CSR_WRITE_4(sc, BWI_STATE_HI, 0);
3608
3609         imstate = CSR_READ_4(sc, BWI_IMSTATE);
3610         if (imstate & (BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT)) {
3611                 imstate &= ~(BWI_IMSTATE_INBAND_ERR | BWI_IMSTATE_TIMEOUT);
3612                 CSR_WRITE_4(sc, BWI_IMSTATE, imstate);
3613         }
3614
3615         /* Enable regwin with gated clock */
3616         state_lo = BWI_STATE_LO_CLOCK |
3617                    BWI_STATE_LO_GATED_CLOCK |
3618                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3619         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3620
3621         /* Flush pending bus write */
3622         CSR_READ_4(sc, BWI_STATE_LO);
3623         DELAY(1);
3624
3625         /* Enable regwin with normal clock */
3626         state_lo = BWI_STATE_LO_CLOCK |
3627                    __SHIFTIN(flags, BWI_STATE_LO_FLAGS_MASK);
3628         CSR_WRITE_4(sc, BWI_STATE_LO, state_lo);
3629
3630         /* Flush pending bus write */
3631         CSR_READ_4(sc, BWI_STATE_LO);
3632         DELAY(1);
3633 }
3634
3635 static void
3636 bwi_set_bssid(struct bwi_softc *sc, const uint8_t *bssid)
3637 {
3638         struct ieee80211com *ic = &sc->sc_ic;
3639         struct bwi_mac *mac;
3640         struct bwi_myaddr_bssid buf;
3641         const uint8_t *p;
3642         uint32_t val;
3643         int n, i;
3644
3645         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3646         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3647
3648         bwi_set_addr_filter(sc, BWI_ADDR_FILTER_BSSID, bssid);
3649
3650         bcopy(ic->ic_myaddr, buf.myaddr, sizeof(buf.myaddr));
3651         bcopy(bssid, buf.bssid, sizeof(buf.bssid));
3652
3653         n = sizeof(buf) / sizeof(val);
3654         p = (const uint8_t *)&buf;
3655         for (i = 0; i < n; ++i) {
3656                 int j;
3657
3658                 val = 0;
3659                 for (j = 0; j < sizeof(val); ++j)
3660                         val |= ((uint32_t)(*p++)) << (j * 8);
3661
3662                 TMPLT_WRITE_4(mac, 0x20 + (i * sizeof(val)), val);
3663         }
3664 }
3665
3666 static void
3667 bwi_updateslot(struct ifnet *ifp)
3668 {
3669         struct bwi_softc *sc = ifp->if_softc;
3670         struct ieee80211com *ic = &sc->sc_ic;
3671         struct bwi_mac *mac;
3672
3673         if ((ifp->if_flags & IFF_RUNNING) == 0)
3674                 return;
3675
3676         ASSERT_SERIALIZED(ifp->if_serializer);
3677
3678         DPRINTF(sc, BWI_DBG_80211, "%s\n", __func__);
3679
3680         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3681         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3682
3683         bwi_mac_updateslot(mac, (ic->ic_flags & IEEE80211_F_SHSLOT));
3684 }
3685
3686 static void
3687 bwi_calibrate(void *xsc)
3688 {
3689         struct bwi_softc *sc = xsc;
3690         struct ieee80211com *ic = &sc->sc_ic;
3691         struct ifnet *ifp = &ic->ic_if;
3692
3693         lwkt_serialize_enter(ifp->if_serializer);
3694
3695         if (ic->ic_state == IEEE80211_S_RUN) {
3696                 struct bwi_mac *mac;
3697
3698                 KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3699                 mac = (struct bwi_mac *)sc->sc_cur_regwin;
3700
3701                 if (ic->ic_opmode != IEEE80211_M_MONITOR) {
3702                         bwi_mac_calibrate_txpower(mac, sc->sc_txpwrcb_type);
3703                         sc->sc_txpwrcb_type = BWI_TXPWR_CALIB;
3704                 }
3705
3706                 /* XXX 15 seconds */
3707                 callout_reset(&sc->sc_calib_ch, hz * 15, bwi_calibrate, sc);
3708         }
3709
3710         lwkt_serialize_exit(ifp->if_serializer);
3711 }
3712
3713 static int
3714 bwi_calc_rssi(struct bwi_softc *sc, const struct bwi_rxbuf_hdr *hdr)
3715 {
3716         struct bwi_mac *mac;
3717
3718         KKASSERT(sc->sc_cur_regwin->rw_type == BWI_REGWIN_T_MAC);
3719         mac = (struct bwi_mac *)sc->sc_cur_regwin;
3720
3721         return bwi_rf_calc_rssi(mac, hdr);
3722 }
3723
3724 static void
3725 bwi_rx_radiotap(struct bwi_softc *sc, struct mbuf *m,
3726                 struct bwi_rxbuf_hdr *hdr, const void *plcp,
3727                 int rate, int rssi)
3728 {
3729         const struct ieee80211_frame_min *wh;
3730
3731         KKASSERT(sc->sc_drvbpf != NULL);
3732
3733         sc->sc_rx_th.wr_flags = IEEE80211_RADIOTAP_F_FCS;
3734         if (htole16(hdr->rxh_flags1) & BWI_RXH_F1_SHPREAMBLE)
3735                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
3736
3737         wh = mtod(m, const struct ieee80211_frame_min *);
3738         if (wh->i_fc[1] & IEEE80211_FC1_WEP)
3739                 sc->sc_rx_th.wr_flags |= IEEE80211_RADIOTAP_F_WEP;
3740
3741         sc->sc_rx_th.wr_tsf = hdr->rxh_tsf; /* No endian convertion */
3742         sc->sc_rx_th.wr_rate = rate;
3743         sc->sc_rx_th.wr_antsignal = rssi;
3744         sc->sc_rx_th.wr_antnoise = BWI_NOISE_FLOOR;
3745
3746         bpf_ptap(sc->sc_drvbpf, m, &sc->sc_rx_th, sc->sc_rx_th_len);
3747 }
3748
3749 static void
3750 bwi_led_attach(struct bwi_softc *sc)
3751 {
3752         const uint8_t *led_act = NULL;
3753         uint16_t gpio, val[BWI_LED_MAX];
3754         int i;
3755
3756         for (i = 0; i < NELEM(bwi_vendor_led_act); ++i) {
3757                 if (sc->sc_pci_subvid == bwi_vendor_led_act[i].vid) {
3758                         led_act = bwi_vendor_led_act[i].led_act;
3759                         break;
3760                 }
3761         }
3762         if (led_act == NULL)
3763                 led_act = bwi_default_led_act;
3764
3765         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO01);
3766         val[0] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_0);
3767         val[1] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_1);
3768
3769         gpio = bwi_read_sprom(sc, BWI_SPROM_GPIO23);
3770         val[2] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_2);
3771         val[3] = __SHIFTOUT(gpio, BWI_SPROM_GPIO_3);
3772
3773         for (i = 0; i < BWI_LED_MAX; ++i) {
3774                 struct bwi_led *led = &sc->sc_leds[i];
3775
3776                 if (val[i] == 0xff) {
3777                         led->l_act = led_act[i];
3778                 } else {
3779                         if (val[i] & BWI_LED_ACT_LOW)
3780                                 led->l_flags |= BWI_LED_F_ACTLOW;
3781                         led->l_act = __SHIFTOUT(val[i], BWI_LED_ACT_MASK);
3782                 }
3783                 led->l_mask = (1 << i);
3784
3785                 if (led->l_act == BWI_LED_ACT_BLINK_SLOW ||
3786                     led->l_act == BWI_LED_ACT_BLINK_POLL ||
3787                     led->l_act == BWI_LED_ACT_BLINK) {
3788                         led->l_flags |= BWI_LED_F_BLINK;
3789                         if (led->l_act == BWI_LED_ACT_BLINK_POLL)
3790                                 led->l_flags |= BWI_LED_F_POLLABLE;
3791                         else if (led->l_act == BWI_LED_ACT_BLINK_SLOW)
3792                                 led->l_flags |= BWI_LED_F_SLOW;
3793
3794                         if (sc->sc_blink_led == NULL) {
3795                                 sc->sc_blink_led = led;
3796                                 if (led->l_flags & BWI_LED_F_SLOW)
3797                                         BWI_LED_SLOWDOWN(sc->sc_led_idle);
3798                         }
3799                 }
3800
3801                 DPRINTF(sc, BWI_DBG_LED | BWI_DBG_ATTACH,
3802                         "%dth led, act %d, lowact %d\n", i,
3803                         led->l_act, led->l_flags & BWI_LED_F_ACTLOW);
3804         }
3805         callout_init(&sc->sc_led_blink_ch);
3806 }
3807
3808 static __inline uint16_t
3809 bwi_led_onoff(const struct bwi_led *led, uint16_t val, int on)
3810 {
3811         if (led->l_flags & BWI_LED_F_ACTLOW)
3812                 on = !on;
3813         if (on)
3814                 val |= led->l_mask;
3815         else
3816                 val &= ~led->l_mask;
3817         return val;
3818 }
3819
3820 static void
3821 bwi_led_newstate(struct bwi_softc *sc, enum ieee80211_state nstate)
3822 {
3823         struct ieee80211com *ic = &sc->sc_ic;
3824         uint16_t val;
3825         int i;
3826
3827         if (nstate == IEEE80211_S_INIT) {
3828                 callout_stop(&sc->sc_led_blink_ch);
3829                 sc->sc_led_blinking = 0;
3830         }
3831
3832         if ((ic->ic_if.if_flags & IFF_RUNNING) == 0)
3833                 return;
3834
3835         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3836         for (i = 0; i < BWI_LED_MAX; ++i) {
3837                 struct bwi_led *led = &sc->sc_leds[i];
3838                 int on;
3839
3840                 if (led->l_act == BWI_LED_ACT_UNKN ||
3841                     led->l_act == BWI_LED_ACT_NULL)
3842                         continue;
3843
3844                 if ((led->l_flags & BWI_LED_F_BLINK) &&
3845                     nstate != IEEE80211_S_INIT)
3846                         continue;
3847
3848                 switch (led->l_act) {
3849                 case BWI_LED_ACT_ON:            /* Always on */
3850                         on = 1;
3851                         break;
3852                 case BWI_LED_ACT_OFF:           /* Always off */
3853                 case BWI_LED_ACT_5GHZ:          /* TODO: 11A */
3854                         on = 0;
3855                         break;
3856                 default:
3857                         on = 1;
3858                         switch (nstate) {
3859                         case IEEE80211_S_INIT:
3860                                 on = 0;
3861                                 break;
3862                         case IEEE80211_S_RUN:
3863                                 if (led->l_act == BWI_LED_ACT_11G &&
3864                                     ic->ic_curmode != IEEE80211_MODE_11G)
3865                                         on = 0;
3866                                 break;
3867                         default:
3868                                 if (led->l_act == BWI_LED_ACT_ASSOC)
3869                                         on = 0;
3870                                 break;
3871                         }
3872                         break;
3873                 }
3874
3875                 val = bwi_led_onoff(led, val, on);
3876         }
3877         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3878 }
3879
3880 static void
3881 bwi_led_event(struct bwi_softc *sc, int event)
3882 {
3883         struct bwi_led *led = sc->sc_blink_led;
3884         int rate;
3885
3886         if (event == BWI_LED_EVENT_POLL) {
3887                 if ((led->l_flags & BWI_LED_F_POLLABLE) == 0)
3888                         return;
3889                 if (ticks - sc->sc_led_ticks < sc->sc_led_idle)
3890                         return;
3891         }
3892
3893         sc->sc_led_ticks = ticks;
3894         if (sc->sc_led_blinking)
3895                 return;
3896
3897         switch (event) {
3898         case BWI_LED_EVENT_RX:
3899                 rate = sc->sc_rx_rate;
3900                 break;
3901         case BWI_LED_EVENT_TX:
3902                 rate = sc->sc_tx_rate;
3903                 break;
3904         case BWI_LED_EVENT_POLL:
3905                 rate = 0;
3906                 break;
3907         default:
3908                 panic("unknown LED event %d", event);
3909                 break;
3910         }
3911         bwi_led_blink_start(sc, bwi_led_duration[rate].on_dur,
3912                             bwi_led_duration[rate].off_dur);
3913 }
3914
3915 static void
3916 bwi_led_blink_start(struct bwi_softc *sc, int on_dur, int off_dur)
3917 {
3918         struct bwi_led *led = sc->sc_blink_led;
3919         uint16_t val;
3920
3921         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3922         val = bwi_led_onoff(led, val, 1);
3923         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3924
3925         if (led->l_flags & BWI_LED_F_SLOW) {
3926                 BWI_LED_SLOWDOWN(on_dur);
3927                 BWI_LED_SLOWDOWN(off_dur);
3928         }
3929
3930         sc->sc_led_blinking = 1;
3931         sc->sc_led_blink_offdur = off_dur;
3932
3933         callout_reset(&sc->sc_led_blink_ch, on_dur, bwi_led_blink_next, sc);
3934 }
3935
3936 static void
3937 bwi_led_blink_next(void *xsc)
3938 {
3939         struct bwi_softc *sc = xsc;
3940         uint16_t val;
3941
3942         val = CSR_READ_2(sc, BWI_MAC_GPIO_CTRL);
3943         val = bwi_led_onoff(sc->sc_blink_led, val, 0);
3944         CSR_WRITE_2(sc, BWI_MAC_GPIO_CTRL, val);
3945
3946         callout_reset(&sc->sc_led_blink_ch, sc->sc_led_blink_offdur,
3947                       bwi_led_blink_end, sc);
3948 }
3949
3950 static void
3951 bwi_led_blink_end(void *xsc)
3952 {
3953         struct bwi_softc *sc = xsc;
3954
3955         sc->sc_led_blinking = 0;
3956 }
3957
3958 static void *
3959 bwi_ratectl_attach(struct ieee80211com *ic, u_int rc)
3960 {
3961         struct bwi_softc *sc = ic->ic_if.if_softc;
3962
3963         switch (rc) {
3964         case IEEE80211_RATECTL_ONOE:
3965                 return &sc->sc_onoe_param;
3966         case IEEE80211_RATECTL_NONE:
3967                 /* This could only happen during detaching */
3968                 return NULL;
3969         default:
3970                 panic("unknown rate control algo %u", rc);
3971                 return NULL;
3972         }
3973 }